Repair Rescan button, cleanup CSS (fixes #1054)

gui/assets/css/overrides.css

@@ -61,18 +61,6 @@ identicon {
 .identicon rect {
     fill: #666;
 }
-.identicon-success rect {
-    fill: #2ecc71;
-}
-.identicon-info rect {
-    fill: #9b59b6;
-}
-.identicon-warning rect {
-    fill: #f1c40f;
-}
-.identicon-primary rect {
-    fill: #3498db;
-}
 
 .text-monospace {
     font-family: Menlo, Monaco, Consolas, "Courier New", monospace;

gui/index.html

@@ -154,7 +154,7 @@
               <div class="panel-footer">
                 <button class="btn btn-sm btn-danger" ng-if="folder.ReadOnly && model[folder.ID].needFiles > 0" ng-click="override(folder.ID)" href=""><span class="glyphicon glyphicon-upload"></span>&emsp;<span translate>Override Changes</span></button>
                 <span class="pull-right">
-                  <button class="btn btn-sm btn-default" href="" ng-show="folderStatus(folder.ID) == 'idle'" ng-click="rescanFolder(folder.ID)"><span class="glyphicon glyphicon-refresh"></span>&emsp;<span translate>Rescan</span></button>
+                  <button class="btn btn-sm btn-default" href="" ng-show="folderStatus(folder) == 'idle'" ng-click="rescanFolder(folder.ID)"><span class="glyphicon glyphicon-refresh"></span>&emsp;<span translate>Rescan</span></button>
                   <button class="btn btn-sm btn-default" href="" ng-click="editFolder(folder)"><span class="glyphicon glyphicon-pencil"></span>&emsp;<span translate>Edit</span></button>
                 </span>
                 <div class="clearfix"></div>