MySpaces webscript now shows Ajax wait animation while loading inner panel area.

Summary pop-up panel fade-out anim removed (improves user experience).
Reorg of broken action evaluator class hiearchy (after ML UI changes).
More fixes to ML UI (browse.jsp missing component IDs breaks screen when panels collapsed then expanded).
Code reorg in interceptors to help performance.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5772 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/web/scripts/ajax/myspaces.js

@@ -40,6 +40,8 @@ var MySpaces = {
    init: function()
    {
       MySpaces.parseSpacePanels();
+      // hide the ajax wait panel and show the main spaces panel
+      $('spacePanelOverlay').setStyle('visibility', 'hidden');
       $('spacePanel').setStyle('visibility', 'visible');
    },
 
@@ -324,6 +326,8 @@ var MySpaces = {
          // empty the main panel div and restart by reloading the panel contents
          var spacePanel = $('spacePanel');
          spacePanel.setStyle('visibility', 'hidden');
+         // show the ajax wait panel
+         $('spacePanelOverlay').setStyle('visibility', 'visible');
          spacePanel.empty();
          spacePanel.removeEvents('mouseleave');
          MySpaces.start();