added seed for default workgroup
Added subtab for Settings in Shares
Added view code for settings tab page
Added PUT route and controller code for settings and updating workgroup.
Added JS code for AJAX updation of workgroup. This took time. Hooraah!
Merge pull request #21 from AnkurGel/bug/1079

Fix for Bug/1079  - Workgroup not settable. Great job Ankur