[#64349062] Added 2 new functions in data.py

Added 2 functions in data.py Graph Collection method, code is yet to be
completed.
Merge branch 'python' into ramki_01242014

Conflicts:
	.DS_Store
[#64349062] Graph collection has load and save methods for objects.
Merge branch 'ramki_01242014' into python
checking in some changes
Merge branch 'ramki_01282014' into python