Merge pull request #707 from supriyasawant/mongokit

Preferred Language error relsolved in Browse topic app when user is not logged in.
code added for displaying CR resources on each topics landing page
code added for fetching the resources and differentiate into 8 defined categories for topic
commented conflicting tag for time being
Merge pull request #709 from sunnychaudhari/mywork

Resources has been displayed on topic landing page
bug resolved in get_preferred_lang
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit
comment removed