Merge branch 'data_log'
+ team members bug fixes
+ contact num changed for Bhubneshwar
--trying to fix tastypie bug of saving.
Merge branch 'data_log' of github.com:digitalgreenorg/dg into data_log
Merge branch 'master' of github.com:digitalgreenorg/dg into data_log
json serialization bug in adding video.
fixed the json serialization bug
Merge branch 'master' of github.com:digitalgreenorg/dg into coco_v2

Conflicts:
	dashboard/data_log.py
Merge branch 'coco_v2' of github.com:digitalgreenorg/dg into coco_v2
Merge branch 'coco_v2' of github.com:digitalgreenorg/dg into coco_v2
Merge branch 'coco_v2' of github.com:digitalgreenorg/dg into coco_v2
--Refactored obj_create and obj_update to save user_created and user_modified at one place. Fixed a bug when mediator is added
Merge branch 'coco_v2' of github.com:digitalgreenorg/dg into coco_v2