ISSUE 4097: Groups Detailed View fixed

Ticket link: http://atutor.ca/atutor/mantis/view.php?id=4097

Previously, the groups detailed view was showing nothing.
Now, the detailed view shows a list of 3 current groups, with the corresponding group tools.
On clicking the group title, one can view the latest additions to the group, like a new blog post, a new forum post, a new file, new link etc. that have been added to the group.

The discussion in IRC regarding this bug can be found here:
http://wiki.atutor.ca/display/atutorirclog/ATutor+IRC+Logs-2013-04-12
http://wiki.atutor.ca/display/atutorirclog/ATutor+IRC+Logs-2013-04-23

I have tested and this with NVDA screen reader and also the detailed view links are accessible. Tested on Chrome, Firefox, IE.