Enable actions for tiles on the Dashboard

Update all the a href actions for tiles;
Update to use @Url.Action() to some of the relative URLs.
Merge remote-tracking branch 'origin/dev' into dev

Conflicts:
	src/TFSOnline/Views/Dashboard/Index.cshtml
Merge branch 'dev' of https://github.com/aspnetvnexthackathon/TFSOnline into dev