Added colletion types as internally.
Merge pull request #757 from sarala0927/master

Added colletion types as internally.
Changed cassandra keyspace prefix name
Merge pull request #758 from parthibane/master

Changed cassandra keyspace prefix name
added support for collection settings
Merge pull request #760 from viji-m/master

added support for collection settings
Merge remote-tracking branch 'gooru/master'
added support for collection settings
Merge pull request #761 from viji-m/master

added support for collection settings
more changes on content settings
Merge pull request #762 from viji-m/master

more changes on content settings
Merge remote-tracking branch 'gooru/master'
more changes on content settings for update
Merge pull request #763 from viji-m/master

more changes on content settings for update
Fixed  Showing the child username twice instead of child's username and parent's email id for teacher's under student tab
Merge remote-tracking branch 'gooru/master'