MDL-62309 tool_policy: New icons for user acceptances report

There was an accessibility issue with the previous icons that we used
the same "checked" shape just in different colours for different
meanings. New icons added for the new statuses:

* partial - a warning icon for the overall status column that the user
  has only some policies accepted, not all.
* pending - that we did not hear yet from the user - whcih is different
  from a declined policy.

admin/tool/policy/lib.php

@@ -204,9 +204,10 @@ function tool_policy_pluginfile($course, $cm, $context, $filearea, $args, $force
  */
 function tool_policy_get_fontawesome_icon_map() {
     return [
-        'tool_policy:agreedno' => 'fa-times text-danger',
-        'tool_policy:agreedyes' => 'fa-check text-success',
-        'tool_policy:agreedyesonbehalf' => 'fa-check text-info',
+        'tool_policy:agreed' => 'fa-check text-success',
+        'tool_policy:declined' => 'fa-times text-danger',
+        'tool_policy:pending' => 'fa-clock-o text-warning',
+        'tool_policy:partial' => 'fa-exclamation-triangle text-warning',
         'tool_policy:level' => 'fa-level-up fa-rotate-90 text-muted',
     ];
 }

admin/tool/policy/pix/agreedyesonbehalf.svg

@@ -1,3 +0,0 @@
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" [
-	<!ENTITY ns_flows "http://ns.adobe.com/Flows/1.0/">
-]><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="-0.1 0 16 16" preserveAspectRatio="xMinYMid meet" overflow="visible"><path d="M6.4 11.1c-2-2.5-3.7-4-3.7-4L0 9.8C5 13.1 8.1 16 8.1 16s.2-.7.6-1.8c.9-2.7 3.2-8.1 7.1-14.2-4.6 3.7-7.7 8.2-9.4 11.1z" fill="#FFB844"/></svg>

admin/tool/policy/pix/partial.svg

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="16"
+   height="16"
+   viewBox="0 0 16 16"
+   preserveAspectRatio="xMinYMid meet"
+   overflow="visible"
+   version="1.1"
+   id="svg956"
+   sodipodi:docname="warning.svg"
+   inkscape:version="0.92.2 5c3e80d, 2017-08-06"
+   inkscape:export-filename="/home/mudrd8mz/www/html/mdk/m36/admin/tool/policy/pix/warning.png"
+   inkscape:export-xdpi="96"
+   inkscape:export-ydpi="96">
+  <metadata
+     id="metadata962">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs960" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1624"
+     inkscape:window-height="911"
+     id="namedview958"
+     showgrid="false"
+     inkscape:zoom="14.75"
+     inkscape:cx="-0.06779661"
+     inkscape:cy="7.3559322"
+     inkscape:window-x="0"
+     inkscape:window-y="25"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="svg956" />
+  <path
+     d="M7 .7L.2 14.1c-.5 1 0 1.8 1.1 1.8h13.2c1.1 0 1.6-.8 1.1-1.8L8.8.7C8.3-.2 7.5-.2 7 .7zm2.4 12.7c0 .8-.7 1.5-1.5 1.5s-1.5-.7-1.5-1.5.7-1.5 1.5-1.5 1.5.6 1.5 1.5zm-.2-7.5v4c0 .5-.5 1-1 1h-.6c-.5 0-1-.5-1-1v-4c0-.6.5-1 1-1h.6c.6 0 1 .4 1 1z"
+     fill="#999"
+     id="path954"
+     style="fill:#ffb844;fill-opacity:1" />
+</svg>

admin/tool/policy/pix/pending.svg

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="16"
+   height="16"
+   viewBox="0 0 16 16"
+   preserveAspectRatio="xMinYMid meet"
+   overflow="visible"
+   version="1.1"
+   id="svg5917"
+   sodipodi:docname="agreedpending.svg"
+   inkscape:version="0.92.2 5c3e80d, 2017-08-06">
+  <metadata
+     id="metadata5923">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs5921" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1026"
+     id="namedview5919"
+     showgrid="false"
+     inkscape:zoom="14.75"
+     inkscape:cx="-0.06779661"
+     inkscape:cy="7.3559322"
+     inkscape:window-x="0"
+     inkscape:window-y="25"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg5917" />
+  <path
+     d="M8 0C3.6 0 0 3.6 0 8s3.6 8 8 8 8-3.6 8-8-3.6-8-8-8zm0 14c-3.3 0-6-2.7-6-6s2.7-6 6-6 6 2.7 6 6-2.7 6-6 6zm4-6c0 .6-.4 1-1 1H8c-.6 0-1-.4-1-1V4c0-.6.4-1 1-1s1 .4 1 1v3h2c.6 0 1 .4 1 1z"
+     fill="#999"
+     id="path5915"
+     style="fill:#ffb844;fill-opacity:1" />
+</svg>