[DEV-1400] Remove mentions of followit URLs from Askbot templates.
[DEV-1400] Add ManyToManyField and methods mimicking followit to AskbotUser.
[DEV-1400] Add migration for m2m field for AskbotUser following.
[DEV-1400] Modify follow_user on AskbotUser to return boolean indicating created status.
[DEV-1400] Add askbot_user views import to views __init__.
[DEV-1400] Add followit-equivalent follow & unfollow views for AskbotUser.
[DEV-1400] Add login_required decorators to followit-ish views.
[DEV-1400] Revert changes to follow_tests: not a necessary change.
[DEV-1400] Re-enable user_network view.