Added `EventPublicView` to display events when not logged in.
Event public view now displays items but does not allow purchase.
Display interactive bits on event template as blocked out if you
are not logged in.
Now using the same scrim element for both non-authenticated users
and non-confirmed users.
Fixed EventPublicView redirect for authenticated users.
Added redirect from order views to public view for unauthenticated / inactive users.
Added redirect back to event page after login/signup from public view.
Merge branch 'ticket/#222'