Cleanups
Cleanup: Just get the template loader class and instantiate it.

This avoids us problems when moving to Django 1.5 which lacks that private
instance of the loader.
Register tag using decorator

Using decorators makes more difficult to miss the registration.
Make building the XPI independent of the path

It should not matter what a path the user called the action from, it
should just always save/retrieve the XPI from the same place.
Cleanup
Cleanups
Add notes about pre-release and string freeze
Getting a list of contributors
We don't support 2.5 anymore
Require at least toolkit 1.11.0
Seems pip does understand rc1 versions
Link to placeables spec
Use -- for emdash
Cleanups
Docs: Removed hacking instructions for impatients

You should be patient and follow all the steps to avoid fucking it.
Docs: Cleanups and minor fixes in hacking docs

* Using the correct markup,
* Adding blank lines,
* Rephrasing some text,
* Adding some sample commands,
* Other changes.
Docs: Added more content to commiting section in hacking docs
Docs: Make switch virtualenv instructions more prominent

Converted instructions to switch the virtualenv on and off to a note with
examples. This way is more difficult to miss it.
Docs: Remove unnecessary paragraph from hacking docs

I forgot to remove it when dropping the instructions for impatient people.
Don't use python-Levenshtein 0.11.0

A fix is here https://github.com/ztane/python-Levenshtein/pull/1

0.11.0 adds Python 3 support, so not something we really need right now.
So until the fix lands, and since it is so close to a final release, let
us be conservative and make sure we're only using the working version.