Give support to lists as configuration value in OCSManager

Added Copyright note and be more pep8 compliant
Added new conf options to tune Autodiscover service

* Enable RPC/Proxy or not
* Have internal networks setting to prioritise RPC/Proxy conf
* Fix bug in SSL configuration setting for autodiscover:rpcproxy section
The implementation for tuning Autodiscover conf
Add missing cleanup for some po files.
Merge pull request #79 from jelmer/fix-clean

Add missing cleanup for some po files.
Merge pull request #76 from sixstone-qq/ejhernandez/autodiscover-conf

Tune Autodiscover Response
Merge branch 'master' into ejhernandez/oof-managesieve
Refactor to make possible to have several backends to put the Sieve script