Change icon set of dashboard widgets

aleksis/core/templates/core/dashboard_widget/dashboardwidget_broken.html

@@ -2,7 +2,7 @@
 
 <div class="card horizontal">
   <div class="card-image">
-    <i class="material-icons large red-text stacked-card-icon">assignment_late</i>
+    <i class="material-icons large red-text stacked-card-icon iconify" data-icon="mdi:clipboard-alert-outline"></i>
   </div>
   <div class="card-stacked">
     <div class="card-content">

aleksis/core/templates/core/dashboard_widget/list.html

@@ -11,7 +11,7 @@
 {% block content %}
 
   <a class="btn green waves-effect waves-light dropdown-trigger" href="#" data-target="widget-dropdown">
-    <i class="material-icons left">add</i>
+    <i class="material-icons left iconify" data-icon="mdi:add"></i>
     {% trans "Create dashboard widget" %}
   </a>
   <ul id="widget-dropdown" class="dropdown-content">
@@ -28,7 +28,7 @@
   {% has_perm "core.edit_default_dashboard_rule" user as can_edit_default_dashboard %}
   {% if can_edit_default_dashboard %}
     <a class="btn orange waves-effect waves-light" href="{% url "edit_default_dashboard" %}">
-      <i class="material-icons left">edit</i>
+      <i class="material-icons left iconify" data-icon="mdi:pencil-outline"></i>
       {% trans "Edit default dashboard" %}
     </a>
   {% endif %}