[Localization] Branching Glucose modules

[Simon Schampijer]

Hi,

I just branched the various Glucose modules. The 'sucrose-0.96' branch 
will be used for stable releases and the master branch to continue 
further development. Bug fixes will be cherry-picked from the master 
branches to the stable branches.

* sugar
* sugar-toolkit-gtk3
* sugar-artwork
* sugar-datastore

The branches for pootle should be created accordingly. Please don't do 
any mass pushes to the stable branches for localization anymore. Only if 
a translation coordinator feels confident about making their 
translations available they should be present on the stable branches.

The following modules have not been branched due to deprecation:

* sugar-toolkit (will be replaced by sugar-toolkit-gtk3 and therefore 
only see bugfixes)
* sugar-base (moved inside sugar-toolkit-gtk3)
* sugar-presence-service (has been deprecated for a long time already)

Regards,
    Simon