Include support for icons in Materialize chips template

aleksis/core/static/style.scss

@@ -344,6 +344,11 @@ span.badge .material-icons {
   font-size: 0.9rem;
 }
 
+.chip .material-icons {
+  line-height: 30px;
+  margin-right: 10px;
+  margin-left: -2px;
+}
 
 /*+++++++++*/
 /* Buttons */

aleksis/core/templates/components/materialize-chips.html

@@ -2,6 +2,9 @@
   {% if img %}
     <img class="{{ img_classes }}" src="{{ img }}" alt="{{ alt }}">
   {% endif %}
+  {% if icon %}
+    <i class="material-icons left">{{ icon }}</i>
+  {% endif %}
   {{ content }}
   {% if close %}
     <i class="close material-icons"></i>