backout a few commits that desyncronized translations and broke physfs on 32 bit
fix
issue #664 ("Quick game will fail if the randomly chosen theme is a DLC/custom one")
fix mission 6 hiding cyborg (
issue #622)
adding some event-strings to german translation. most of these were suggested by Topf
http://standards.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#deprecated-items - The Encoding key is deprecated.