Sticky bulk toolbar on dashboard; anchor scroll on device unassign

templates/device_detail.html

@@ -92,7 +92,7 @@ function addInstallRow() {
 </script>
 </div>
 
-<div class="card">
+<div class="card" id="installed">
   <h2>Installed Batteries</h2>
   {% set installed = device.batteries | selectattr('status', 'eq', 'installed') | list %}
   {% if installed %}
@@ -109,7 +109,7 @@ function addInstallRow() {
             <td data-label="Notes" class="text-muted">{{ b.notes or '—' }}</td>
             <td data-label="Actions">
               <form class="inline" method="post" action="{{ url_for('battery_unassign', battery_id=b.id) }}">
-                <input type="hidden" name="next" value="{{ url_for('device_detail', device_id=device.id) }}">
+                <input type="hidden" name="next" value="{{ url_for('device_detail', device_id=device.id) }}#installed">
                 <button class="btn btn-sm btn-warning" type="submit">Unassign</button>
               </form>
             </td>