turn off CAS auto-create
Return no static interfaces if VRF has no static interfaces
Fix related_name of Ctnr.users so it makes sense
Merge pull request #766 from murrown/no_user_autocreate

Turn off CAS auto-create
Merge pull request #782 from drkitty/fix-ctnr-related_name

Fix related_name of Ctnr.users so it makes sense
Merge pull request #778 from drkitty/networkless-vrf-SIs

Make VRF list view show no static interfaces if VRF has no static interfaces