* DistUpgrade/DistUpgrade.cfg:
  - remove goubuntu-desktop from metapackages, we do no
    longer build it (LP: #283712)
* DistUpgrade/DistUpgradeCache.py: 
  - never remove packages in the "KeepInstalled" section
  - keep the GUI alive when calculating the packages
    to cleanup
* DistUpgrade/DistUpgradeQuirks.py:
  - mark "language-pack-$lang" as manual installed to
    workaround changes in "language-support-$lang" 
    (LP: #287551)
 * po/:
   - updated to the latest translations.launchpad.net
     version