update rspec syntax to v3
change syntax to rspec v3
oops. fix typo
mailers classes with rspec3 syntax
helpers with rspec3 syntax
jobs with rspec3 syntax
serializers with rspec3 syntax
views with rspec3 syntax
support to rspec3 syntax
category spec with rspec3 syntax
Changed internals so trust levels are referred to with
TrustLevel[1], TrustLevel[2] etc.
This gives us much better flexibility naming trust levels, these names
are meant to be controlled by various communities.
This change has a tradeoff.
It increases our backscatter vulnerability - the subject could have spammy content - but it's extremely valuable to the user to know exactly which message was rejected.
If you sent two at the same time, and only one was rejected, you would have no way of knowing which worked and which to resend without going to the website (which is what email-in is trying to avoid, kinda).
