Convert INSTALLATION to rst
i18n: Upgrade Italian translation
Correct links to INSTALLATION.md
Make append_member_and_format consume kwargs

Commits 42e03d2796f95ff1a1220277d5efd6e123073191 and
604e2358ee706c9164e964bdf31aefe06bb063c8 accidently called
append_member_and_format with kwargs indirectly.

This commit simply makes the function accept kwargs and do nothing with
them.
Update README (RabbitMQ -> Redis)
fix typos in docstrings
pep8
Remove unneeded method
Make FakeJob work again

This allows to run Adhocracy without configuring Redis
Better debug message in FakeJob case
Add configuration option to disable background processing
Add note to FakeJob about other way of doing synchronous processing
Refactor all_languages and all_language_infos

* avoid duplicate entries in result list
* move common code in one function
Use generator in generator instead of generator in iterator
Merge pull request #354 from nidico/feature-refactor-all-languages

Refactor all_languages and all_language_infos
updated to buildout 2
pin more eggs
use show-picked-versions instead of buildout.dumppickedversions
added upgrade information
cleanup versions.cfg