Merge pull request #794 from AvadootNachankar/mongokit

MIS Updates - 'Enroll Students in Courses' Implementation
bug resolved in displaying image thumbnails in collection panel for a resource
Merge pull request #795 from sunnychaudhari/collection

Bug resolved in displaying image thumbnails in collection panel for a resource
removed the pointer for collection element & pushed element to the left
small card view implemented for all resource types
Merge pull request #796 from sunnychaudhari/collection

Small card view implemented for all resource types
theme tree displays according to the language selection
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit
Merge pull request #797 from supriyasawant/mongokit

bug resolved in theme tree display.
Bug resolved: While saving sub-types of Courses (NUSSD Course) & (Announced Course)
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit