diff --git a/protected/humhub/modules/space/widgets/Picker.php b/protected/humhub/modules/space/widgets/Picker.php
deleted file mode 100644
index 7e6e939bd8..0000000000
--- a/protected/humhub/modules/space/widgets/Picker.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-
-/**
- * @link https://www.humhub.org/
- * @copyright Copyright (c) 2016 HumHub GmbH & Co. KG
- * @license https://www.humhub.com/licences
- */
-
-namespace humhub\modules\space\widgets;
-
-use humhub\modules\space\models\Space;
-use Yii;
-use yii\base\Widget;
-use yii\helpers\Url;
-
-/**
- * Picker displays a space picker instead of an input field.
- *
- * To use this widget, you may insert the following code in a view:
- * <pre>
- * 
- * echo humhub\modules\space\widgets\Picker::widget([
- *    'inputId' => 'space_filter',
- *    'value' => $spaceGuidsString,
- *    'maxSpaces' => 3
- * ]);
- *  
- * </pre>
- *
- * @since 0.5
- * @deprecated since version 1.2 use SpacePickerField instead
- * @author Luke
- */
-class Picker extends Widget
-{
-    /**
-     * @var string The id of input element which should replaced
-     */
-    public $inputId = '';
-
-    /**
-     * JSON Search URL - default: /space/browse/search-json
-     * The token -keywordPlaceholder- will replaced by the current search query.
-     *
-     * @var string the search url
-     */
-    public $spaceSearchUrl = '';
-
-    /**
-     * @var int the maximum of spaces
-     */
-    public $maxSpaces = 10;
-
-    /**
-     * @var \yii\base\Model the data model associated with this widget. (Optional)
-     */
-    public $model = null;
-
-    /**
-     * The name can contain square brackets (e.g. 'name[1]') which is used to collect tabular data input.
-     * @var string the attribute associated with this widget. (Optional)
-     */
-    public $attribute = null;
-
-    /**
-     * @var string the initial value of comma separated space guids
-     */
-    public $value = '';
-
-    /**
-     * @var string placeholder message, when no space is set
-     */
-    public $placeholder = null;
-
-    /**
-     * Displays / Run the Widgets
-     */
-    public function run()
-    {
-        // Try to get current field value, when model & attribute attributes are specified.
-        if ($this->model != null && $this->attribute != null) {
-            $attribute = $this->attribute;
-            $this->value = $this->model->$attribute;
-        }
-
-        if ($this->spaceSearchUrl == '')
-            $this->spaceSearchUrl = Url::to(['/space/browse/search-json', 'keyword' => '-keywordPlaceholder-']);
-
-        if ($this->placeholder === null) {
-            $this->placeholder = Yii::t('SpaceModule.chooser', 'Add {n,plural,=1{space} other{spaces}}', ['n' => $this->maxSpaces]);
-        }
-
-        // Currently populated spaces
-        $spaces = [];
-        foreach (explode(",", $this->value) as $guid) {
-            $space = Space::findOne(['guid' => trim($guid)]);
-            if ($space != null) {
-                $spaces[] = $space;
-            }
-        }
-
-        return $this->render('spacePicker', [
-                    'spaceSearchUrl' => $this->spaceSearchUrl,
-                    'maxSpaces' => $this->maxSpaces,
-                    'value' => $this->value,
-                    'spaces' => $spaces,
-                    'placeholder' => $this->placeholder,
-                    'inputId' => $this->inputId,
-        ]);
-    }
-
-}
diff --git a/protected/humhub/modules/space/widgets/views/spacePicker.php b/protected/humhub/modules/space/widgets/views/spacePicker.php
deleted file mode 100644
index fd322ab08e..0000000000
--- a/protected/humhub/modules/space/widgets/views/spacePicker.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-
-use humhub\modules\space\widgets\Image;
-use yii\helpers\Html;
-use yii\web\View;
-
-$this->registerJsFile('@web-static/resources/space/spacepicker.js', ['position' => View::POS_END]);
-
-// Resolve guids to space tags
-$selectedSpaces = '';
-foreach ($spaces as $space) {
-    $name = Html::encode($space->name);
-    $selectedSpaces .= '<li class="spaceInput" id="' . $space->guid . '">' . Image::widget(['space' => $space, 'width' => 24]) . ' ' . addslashes($name) . '<i class="fa fa-times-circle"></i></li>';
-}
-?>
-
-<script <?= \humhub\libs\Html::nonce() ?>>
-    $(function () {
-        $('#<?= $inputId; ?>').spacepicker({
-            inputId: '#<?= $inputId; ?>',
-            maxSpaces: '<?= $maxSpaces; ?>',
-            searchUrl: '<?= $spaceSearchUrl; ?>',
-            currentValue: '<?= str_replace("\n", " \\", $selectedSpaces); ?>',
-            placeholder: '<?= Html::encode($placeholder); ?>'
-        });
-    });
-</script>
diff --git a/static/resources/space/spacechooser.js b/static/resources/space/spacechooser.js
deleted file mode 100644
index 49cb349d60..0000000000
--- a/static/resources/space/spacechooser.js
+++ /dev/null
@@ -1,174 +0,0 @@
-/**
- * Handling space chooser user input
- */
-
-$(document).ready(function () {
-
-    var chosen = []; // Array for visible space menu entries
-    var arrPosition = ""; // Save the current position inside the chosen array
-
-
-
-    /**
-     * Show and navigate through spaces depends on user input
-     */
-    $('#space-menu-search').keyup(function (event) {
-
-        if (event.keyCode == 40) {
-
-            // set current array position
-            if (arrPosition === "") {
-                arrPosition = 1;
-            } else if ((arrPosition) < chosen.length - 1) {
-                arrPosition++;
-            }
-
-            // remove selection from last space entry
-            $('#space-menu-dropdown li ul li').removeClass('selected');
-
-            // add selection to the current space entry
-            $('#space-menu-dropdown li ul li:eq(' + chosen[arrPosition] + ')').addClass('selected');
-
-            return false;
-
-        } else if (event.keyCode == 38) {
-
-            // set current array position
-            if (arrPosition === "") {
-                arrPosition = 1;
-            } else if ((arrPosition) > 0) {
-                arrPosition--;
-            }
-
-            $('#space-menu-dropdown li ul li').removeClass('selected');
-
-            // add selection to the current space entry
-            $('#space-menu-dropdown li ul li:eq(' + chosen[arrPosition] + ')').addClass('selected');
-
-            return false;
-
-        } else if (event.keyCode == 13) {
-
-            // check if one space is selected
-            if ($('#space-menu-spaces li').hasClass("selected")) {
-
-                // move to selected space, by hitting enter
-                window.location.href = $('#space-menu-dropdown li ul li.selected a').attr('href');
-            }
-
-        } else {
-
-            // lowercase and save entered string in variable
-            var input = $(this).val().toLowerCase();
-
-            if (input > 0) {
-                // remove max-height property to hide the nicescroll scrollbar
-                $('#space-menu-spaces').css({'max-height': 'none'});
-            } else {
-                // set max-height property to show the nicescroll scrollbar
-                $('#space-menu-spaces').css({'max-height': '400px'});
-            }
-
-            // empty variable and array
-            chosen = [];
-            arrPosition = "";
-
-            $("#space-menu-dropdown li ul li").each(function (index) {
-
-                // remove selected classes from all space entries
-                $('#space-menu-dropdown li ul li').removeClass('selected');
-
-
-                // lowercase and save space strings in variable
-                var str = $(this).text().toLowerCase();
-
-                if (str.search(input) == -1) {
-                    // hide elements when not matched
-                    $(this).css('display', 'none');
-                } else {
-                    // show elements when matched
-                    $(this).css('display', 'block');
-
-                    // update array with the right li element
-                    chosen.push(index);
-                }
-
-            });
-
-
-            // add selection to the first space entry
-            $('#space-menu-dropdown li ul li:eq(' + chosen[0] + ')').addClass('selected');
-
-            // check if entered string is empty or not
-            if (input.length == 0) {
-                // reset inputs
-                resetSpaceSearch();
-            } else {
-                // show search reset icon
-                $('#space-search-reset').fadeIn('fast');
-            }
-
-            // remove hightlight
-            $("#space-menu-dropdown li ul li").removeHighlight();
-
-            // add new highlight matching strings
-            $("#space-menu-dropdown li ul li").highlight(input);
-
-
-        }
-
-        //return event.returnValue;
-
-    });
-
-    /**
-     * Disable enter key
-     */
-    $('#space-menu-search').keypress(function (event) {
-        if (event.keyCode == 13) {
-            // deactivate the standard press event
-            event.preventDefault();
-            return false;
-        }
-    });
-
-
-    /**
-     * Click handler to reset user input
-     */
-    $('#space-search-reset').click(function () {
-        resetSpaceSearch();
-    });
-
-    /**
-     * Reset user input
-     */
-    function resetSpaceSearch() {
-
-        // fade out the cross icon
-        $('#space-search-reset').fadeOut('fast');
-
-        // empty input field
-        $('#space-menu-search').val('');
-
-        // set focus to input field
-        $('#space-menu-search').focus();
-
-        $("#space-menu-dropdown li ul li").each(function () {
-
-            // show all space entries
-            $(this).css('display', 'block');
-
-            // remove search result highlighting
-            $("#space-menu-dropdown li ul li").removeHighlight();
-
-            // remove the curren tspace entry selection
-            $('#space-menu-dropdown li ul li').removeClass('selected');
-
-        });
-
-        // set max-height property to show the nicescroll scrollbar
-        $('#space-menu-spaces').css({'max-height': '400px'});
-    }
-
-});
\ No newline at end of file
diff --git a/static/resources/space/spacepicker.js b/static/resources/space/spacepicker.js
deleted file mode 100644
index 9683f8cc14..0000000000
--- a/static/resources/space/spacepicker.js
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
- * SpacePicker
- * Version 1.0.0
- * Written by: Andreas Strobel
- *
- * @property String $inputId is the ID of the input HTML Element
- * @property Int $maxSpaces the maximum of users in this dropdown
- * @property String $spaceSearchUrl the url of the search, to find the spaces
- * @property String $currentValue is the current value of the parent field.
- * @property String $templates.inputStructure is the HTML structure to replace the original input element.
- *
- * License: MIT License - http://www.opensource.org/licenses/mit-license.php
- */
-
-
-var chosen = "";
-var spaceCount = 0;
-
-$.fn.spacepicker = function (options) {
-
-    // set standard options
-    options = $.extend({
-        inputId: "",
-        maxSpaces: 0,
-        searchUrl: "",
-        placeholder: "",
-        currentValue: "",
-    }, options);
-
-    // add input structure template
-    options = $.extend({
-        templates: {
-            inputStructure: '<div class="space_picker_container"><ul class="tag_input" id="space_tags"><li id="space_tag_input"><input type="text" id="space_input_field" class="tag_input_field" value="" autocomplete="off" placeholder="'+options.placeholder+'"></li></ul><ul class="dropdown-menu" id="spacepicker" role="menu" aria-labelledby="dropdownMenu"></ul></div>'
-        }
-    }, options);
-
-
-    init();
-
-
-    function init() {
-
-        // remove picker if existing
-        $('.space_picker_container').remove();
-
-        // insert the new input structure after the original input element
-        $(options.inputId).after(options.templates.inputStructure);
-
-        // hide original input element
-        $(options.inputId).hide();
-
-        if (options.currentValue != "") {
-
-            // restore data from database
-            restoreSpaceTags(options.currentValue);
-        }
-
-        // simulate focus in
-        $('#space_input_field').focusin(function () {
-            $('#space_tags').addClass('focus');
-        })
-
-        // simulate focus out
-        $('#space_input_field').focusout(function () {
-            $('#space_tags').removeClass('focus');
-        });
-
-        $('body').append($('#spacepicker'));
-    }
-
-    function restoreSpaceTags(html) {
-
-        // add html structure for input element
-        $('#space_tags').prepend(html);
-
-        // create function for every space tag to remove the element
-        $('#space_tags .spaceInput i').each(function () {
-
-            $(this).click(function () {
-
-                // remove user tag
-                $(this).parent().remove();
-
-                // reduce the count of added spaces
-                spaceCount--;
-
-            })
-
-            // raise the count of added spaces
-            spaceCount++;
-
-        })
-
-
-    }
-
-
-    // Set focus on the input field, by clicking the <ul> construct
-    jQuery('#space_tags').click(function () {
-
-        // set focus
-        $('#space_input_field').focus();
-    })
-
-    $('#space_input_field').keydown(function (event) {
-
-        // by pressing the tab key an the input is empty
-        if ($(this).val() == "" && event.keyCode == 9) {
-
-            //do nothing
-
-            // by pressing enter, tab, up or down arrow
-        } else if (event.keyCode == 40 || event.keyCode == 38 || event.keyCode == 13 || event.keyCode == 9) {
-
-            // ... disable the default behavior to hold the cursor at the end of the string
-            event.preventDefault();
-
-        }
-
-        // if there is a space limit and the user didn't press the tab key
-        if (options.maxSpaces != 0 && event.keyCode != 9) {
-
-            // if the max space count is reached
-            if (spaceCount == options.maxSpaces) {
-
-                // show hint
-                showHintSpaces();
-
-                // block input events
-                event.preventDefault();
-            }
-        }
-
-    })
-
-    $('#space_input_field').keyup(function (event) {
-
-        // start search after a specific count of characters
-        if ($('#space_input_field').val().length >= 3) {
-
-            // set spacepicker position in bottom of the space input
-            $('#spacepicker').css({
-                position: "absolute",
-                top: $('#space_input_field').offset().top + 30,
-                left: $('#space_input_field').offset().left + 2
-            })
-
-            if (event.keyCode == 40) {
-
-                // select next <li> element
-                if (chosen === "") {
-                    chosen = 1;
-                } else if ((chosen + 1) < $('#spacepicker li').length) {
-                    chosen++;
-                }
-                $('#spacepicker li').removeClass('selected');
-                $('#spacepicker li:eq(' + chosen + ')').addClass('selected');
-                return false;
-
-            } else if (event.keyCode == 38) {
-
-                // select previous <li> element
-                if (chosen === "") {
-                    chosen = 1;
-                } else if (chosen > 0) {
-                    chosen--;
-                }
-                $('#spacepicker li').removeClass('selected');
-                $('#spacepicker li:eq(' + chosen + ')').addClass('selected');
-                return false;
-
-            } else if (event.keyCode == 13 || event.keyCode == 9) {
-
-                var href = $('#spacepicker .selected a').attr('href');
-                // simulate click event when href is not undefined.
-                if (href !== undefined) {
-                    window.location.href = href;
-                }
-
-            } else {
-
-                // save the search string to variable
-                var str = $('#space_input_field').val();
-
-                // show spacepicker with the results
-                $('#spacepicker').show();
-
-                // load spaces
-                loadSpaces(str);
-            }
-        } else {
-
-            // hide spacepicker
-            $('#spacepicker').hide();
-        }
-
-
-    })
-
-
-    $('#space_input_field').focusout(function () {
-
-        // set the plain text including user guids to the original input or textarea element
-        $(options.inputId).val(parseSpaceInput());
-    })
-
-
-    function loadSpaces(string) {
-
-        // remove existings entries
-        $('#spacepicker li').remove();
-
-        // show loader while loading
-        $('#spacepicker').html('<li><div class="loader"><div class="sk-spinner sk-spinner-three-bounce"><div class="sk-bounce1"></div><div class="sk-bounce2"></div><div class="sk-bounce3"></div></div></div></li>');
-
-        jQuery.getJSON(options.searchUrl.replace('-keywordPlaceholder-', string), function (json) {
-
-            // remove existings entries
-            $('#spacepicker li').remove();
-
-
-            if (json.length > 0) {
-
-
-                for (var i = 0; i < json.length; i++) {
-
-                    var _guid = json[i].guid;
-                    var _title = addslashes(htmlDecode(json[i].title));
-                    var _image = $('<div/>').text(json[i].image).html();
-                    _image = _image.replace(/"/g, '\\\'');
-
-                    // build <li> entry
-                    var str = '<li><a tabindex="-1" href="javascript:addSpaceTag(\'' + _guid + '\', \'' + _image + '\', \'' + _title + '\');">' + json[i].image + ' ' + _title + '</a></li>';
-
-                    // append the entry to the <ul> list
-                    $('#spacepicker').append(str);
-
-                }
-
-                // reset the variable for arrows keys
-                chosen = "";
-
-            } else {
-
-                // hide spacepicker, if no space was found
-                $('#spacepicker').hide();
-            }
-
-
-            // remove hightlight
-            $("#spacepicker li").removeHighlight();
-
-            // add new highlight matching strings
-            $("#spacepicker li").highlight(string);
-
-            // add selection to the first space entry
-            $('#spacepicker li:eq(0)').addClass('selected');
-
-        })
-    }
-
-    function showHintSpaces() {
-
-        // remove hint, if exists
-        $('#maxSpaceHint').remove();
-
-        // build html structure
-        var _html = '<div id="maxSpaceHint" style="display: none;" class="alert alert-danger"><button type="button" class="close" data-dismiss="alert">×</button><strong>Sorry!</strong> You can add a maximum of ' + options.maxSpaces + ' default spaces for this group.</div>';
-
-        // add hint to DOM
-        $('#space_tags').after(_html);
-
-        // fadein hint
-        $('#maxSpaceHint').fadeIn('fast');
-    }
-
-}
-
-// Add a space tag for invitation
-function addSpaceTag(guid, image, name) {
-
-    // Building a new <li> entry
-    var _tagcode = '<li class="spaceInput" id="' + guid + '">' + image + ' ' + name + '<i class="fa fa-times-circle"></i></li>';
-
-
-    // insert the new created <li> entry into the <ul> contruct
-    $('#space_tag_input').before(_tagcode);
-
-
-    // remove tag, by clicking the close icon
-    $('#' + guid + " i").click(function () {
-
-        // remove space tag
-        $('#' + guid).remove();
-
-        // reduce the count of added spaces
-        spaceCount--;
-
-    })
-
-    // hide space results
-    $('#spacepicker').hide();
-
-    // set focus to the input element
-    $('#space_input_field').focus();
-
-    // Clear the textinput
-    $('#space_input_field').val('');
-
-    // raise the count of added spaces
-    spaceCount++;
-
-
-}
-
-function parseSpaceInput() {
-
-    // create and insert a dummy <div> element to work with
-    $('#space_tags').after('<div id="spaceInputResult"></div>')
-
-    // set html form input element to the new <div> element
-    $('#spaceInputResult').html($('#space_tags').html());
-
-
-    $('#spaceInputResult .spaceInput').each(function () {
-
-        // add the space guid as plain text
-        $(this).after(this.id + ",");
-
-        // remove the link
-        $(this).remove();
-    })
-
-    // save the plain text
-    var result = $('#spaceInputResult').text();
-
-    // remove the dummy <div> element
-    $('#spaceInputResult').remove();
-
-// return the plain text
-    return result;
-
-}
-
-function addslashes(str) {
-
-    return (str + '').replace(/[\\"']/g, '\\$&').replace(/\u0000/g, '\\0');
-}
-
-function htmlDecode(value) {
-    return $("<textarea/>").html(value).text();
-}