[app] Fix crash when app.worker is unset
[postgres] Add version setting to blues.postgres
[postgres] Fix bug in blues.postgres.setup, make password optional
[postgres] Add support for PostgreSQL 9.3
[app] More infos in app.deploy
[django] Add django.manage setting
[git] Fix major issues with git.diff_stat and newer Gits
[postgres] Upload pgtune.conf also
[postgres] Add LOGIN permission to new roles