Commented edit_drawer_widget tag since it takes value from an ajax function 'drawer_widget' as we click on add module tab
Fixed the size of drawer widget according to the list of contents
Now on click of prior node & collection tab it goes to an ajax call which process the drawer elements
Commented edit_drawer_widget function
url added for an ajax call of drawer_widget
drawer_widget function implemented to process the drawer elements according to the app context
Merge pull request #502 from sunnychaudhari/mongokit

Resolved the bug regarding editing resources.
Merge pull request #503 from kedar2a/mongokit

Observation App - Completed with implementing redirection for anonymous user
Obs App - Fixing bug in setting cookies