added forum app
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit

Conflicts:
	gnowsys-ndf/gnowsys_ndf/ndf/templatetags/ndf_tags.py
	gnowsys-ndf/gnowsys_ndf/ndf/urls/__init__.py
	gnowsys-ndf/gnowsys_ndf/ndf/views/group.py
Merge branch 'mongokit' of https://github.com/anujag/gstudio into anujag-mongokit
Error resolved after testing madam(anajag)'s code