Set up functionality to set a default ctnr
Merge branch 'master' of https://github.com/OSU-Net/cyder into default_ctnr
Added button to set default ctnr
Merge branch 'default_ctnr' of https://github.com/church29/cyder into church29-default_ctnr

Conflicts:
	cyder/core/cyuser/urls.py
	cyder/core/cyuser/views.py
	cyder/templates/base/base.html
css for ctnr default button
Fixed issue with login_session creating multiple instances of ctnrusers in the default ctnr
Merge pull request #514 from church29/default_ctnr

Default ctnr