Merge branch 'release/0.80.55' into develop
1flow.io switch to develop. This will ease development, having a real platform to test things. Continuous development, continuous releases.
languages implement the duplicate-aware thing and know how to replace themselves everywhere, natively.
update the git branch when deploying superfast.
Finally make clear the language codes things (hopefully). Always get the code lower case, as Django says browsers use it case-insensitive.
new migrate superfast target.
more shortcuts in fabfile.
less characters ;-)
don't “update” in superfast targets, this is counter-sense for “superfast” operations. changing git branch is something that occurs very rarely and must be done manually.
oops. forgot the migration.
update constraints on language.
include more constants in context_processor for user imports.
Re-work the import process (not yet ported on RELdb) and make the immediate import run() the userimport immediately.

This is going to be quick because there is only one URL to import, and we now have the same behaviour as before for the user, but better.

If he/she imports a feed URL, he's brought directly to his/her new subscription.
use constants, Luke!
Stop migrating reads during articles migration, it slows down things too much. We now have enough data to port views.
typo in verbose name.
simplify and make code work.
Make the tag duplicate replacing more verbose (it can be very long, we'd better know what it does before it starts).
Include django_extensions and install pygraphviz for easy models graphing.
Avoid clutter at start.