Fix bug 20631: move timezone setting into usability settings panel.

git-svn-id: https://dotnetnuke.svn.codeplex.com/svn@71740 142e9c35-602f-4880-9f37-ec48a24daa6a
Fix bug 20642: refresh inbox status every 1 minute.

git-svn-id: https://dotnetnuke.svn.codeplex.com/svn@71741 142e9c35-602f-4880-9f37-ec48a24daa6a