Make datasync changes bulk-deletable

tailbone/templates/datasync/changes/index.mako

@@ -17,6 +17,7 @@
 </%def>
 
 <%def name="grid_tools()">
+  ${parent.grid_tools()}
   ${h.form(url('datasync.restart'), name='restart-datasync')}
   ${h.csrf_token(request)}
   <button type="submit">Restart DataSync</button>

tailbone/views/datasync.py

@@ -47,6 +47,7 @@ class DataSyncChangesView(MasterView):
 
     creatable = False
     editable = False
+    bulk_deletable = True
 
     grid_columns = [
         'source',