squashing migrations (requires tag 3.5.0 to be already installed and migrated) and  seeds settings and languages as initializers (checked on each startup and populated only on the very first one)

Squashed commit of the following:

commit 8c2551ce5d4b39bcbc58c2ecba2cca21d35263aa
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Fri Apr 11 12:40:16 2014 +0200

    seeds settings and languages as initializers (checked on each startup and populated only on the very first one)

commit 952185a799dc34bbc60af7e2a74f839bfb394259
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Fri Apr 11 12:39:19 2014 +0200

    squashing migrations (requires tag 3.5.0 to be already installed and migrated)

commit 98d88672a64226189f37919487d2d3a4ab141bb6
Author: Franco Sellitto <franco.sellitto@zhdk.ch>
Date:   Tue Apr 8 16:29:50 2014 +0200

    squashing migrations (wip)