This will be helpful when refactoring them to use a common template.
No visual changes.
Tested by create email confirmation link and then manipulated it to
get to various states. Force rendered the realm_creation_disabled
template instead of link_malformed template to check it.
The previous error page was inadequate for serving the two different
scenarios where we show errors in realm_creations, in particular
containing a misleading sentence about realm creation being disabled
(even in the case where it was actually enabled and the user simply had
an expired link).
Aman Agrawal
Alex Vandiver
Mateusz Mandera
Vishnu Ks