Improve style of button with single icon without text (#5952)

protected/humhub/config/assets-prod.php

@@ -2,7 +2,7 @@
 /**
  * This file is generated by the "yii asset" command.
  * DO NOT MODIFY THIS FILE DIRECTLY.
- * @version 2022-11-29 11:02:20
+ * @version 2022-11-29 14:04:39
  */
 return [
     'app' => [

protected/humhub/widgets/Button.php

@@ -227,6 +227,10 @@ class Button extends BootstrapComponent
             $this->htmlOptions['data-action-method'] = $method;
         }
 
+        if ($this->text === null && $this->_icon !== null) {
+            $this->htmlOptions['class'] .= ' btn-icon-only';
+        }
+
         if ($this->_link) {
             $href = isset($this->htmlOptions['href']) ? $this->htmlOptions['href'] : null;
             return Html::a($this->getText(), $href, $this->htmlOptions);

static/less/button.less

@@ -15,8 +15,10 @@
     font-size: 14px;
     font-weight: 600;
     padding: 8px 16px;
-    i {
-        margin-right: 4px;
+    &:not(.btn-icon-only) {
+        i.fa {
+            margin-right: 4px;
+        }
     }
 }