updating forum module
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit
Merge pull request #87 from anujag/mongokit

minor updates on forum module
modifications in forum templates
Merge pull request #88 from anujag/mongokit

modifications in forum templates
Group edit is implemented
merged conflict
display of group dashboard
Merge pull request #89 from Dhiru/mongokit

 Group edit is implemented
Included videos & modification in collection module for displaying Quiz, also changes in prior node for quiz
Merge pull request #90 from sunnychaudhari/mongokit

Included videos & modification in collection module for displaying Quiz and changes in prior node for quiz
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit
Minor changes to Quiz-Item details-view and Quiz list-view, including necessary changes to other required files.