remove all bootstrap icons in favor of material design icons

netbox/utilities/templates/buttons/add.html

@@ -1,6 +1,6 @@
 <div class="d-flex flex-shrink-1 m-1">
   <a href="{{ add_url }}" type="button" class="btn btn-sm btn-success">
-    <i class="bi bi-plus-circle"></i>
+    <i class="mdi mdi-plus-thick"></i>
     &nbsp;Add
   </a>
 </div>

netbox/utilities/templates/buttons/clone.html

@@ -1,3 +1,3 @@
 <a href="{{ url }}" class="btn btn-sm btn-success m-1" role="button">
-    <i class="bi bi-layers-fill" aria-hidden="true"></i> Clone
+    <i class="mdi mdi-content-copy" aria-hidden="true"></i>&nbsp;Clone
 </a>

netbox/utilities/templates/buttons/delete.html

@@ -1,3 +1,3 @@
 <a href="{{ url }}" class="btn btn-sm btn-danger m-1" role="button">
-    <span class="bi bi-trash-fill" aria-hidden="true"></span> Delete
+    <span class="mdi mdi-trash-can-outline" aria-hidden="true"></span>&nbsp;Delete
 </a>

netbox/utilities/templates/buttons/edit.html

@@ -1,3 +1,3 @@
 <a href="{{ url }}" class="btn btn-sm btn-warning m-1" role="button">
-    <span class="bi bi-pencil-fill" aria-hidden="true"></span> Edit
+    <span class="mdi mdi-pencil" aria-hidden="true"></span>&nbsp;Edit
 </a>

netbox/utilities/templates/buttons/export.html

@@ -1,6 +1,6 @@
 <div class="dropdown m-1">
     <button type="button" class="btn btn-sm btn-outline-secondary dropdown-toggle" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-        <i class="bi bi-download"></i>&nbsp;Export
+        <i class="mdi mdi-download"></i>&nbsp;Export
     </button>
     <ul class="dropdown-menu dropdown-menu-end">
         <li><a class="dropdown-item" href="?{% if url_params %}{{ url_params.urlencode }}&{% endif %}export=table">Current View</a></li>

netbox/utilities/templates/buttons/import.html

@@ -1,3 +1,3 @@
 <a href="{% url import_url %}" type="button" class="btn btn-sm btn-outline-secondary m-1">
-  <i class="bi bi-upload"></i>&nbsp;Import
+  <i class="mdi mdi-upload"></i>&nbsp;Import
 </a>