Merge pull request #277 from kedar2a/mongokit

 Modified code to overcome Ctrl+Click issue in web-kit Browser like Chrome.
Bug fixed regarding group name in user dashboard
Merge pull request #279 from sunnychaudhari/mongokit

Bug fixed regarding group name in user dashboard
Bug fixed regarding heterogeneous collection drawer
Merge pull request #280 from sunnychaudhari/mongokit

Bug fixed regarding heterogeneous collection drawer
Migrated type_of field from unicode to ObjectId
Merge pull request #281 from sunnychaudhari/mongokit

Migrated type_of field from unicode to ObjectId
Saving graph as SVG and creating left partion for graph metadata