Clean GPU names in dashboard and remove stale servers from DB

app/templates/index.html

@@ -171,7 +171,7 @@
                                 <h4>GPUs</h4>
                                 <table>
                                     {% for gpu in gpus %}
-                                    <tr><td>GPU {{ loop.index0 }}</td><td>{{ gpu.get('description', '-') }}</td></tr>
+                                    <tr><td>GPU {{ loop.index0 }}</td><td>{{ gpu.get('description', '-')|clean_gpu }}</td></tr>
                                     {% endfor %}
                                 </table>
                             </div>