Translation update

Updating 'mumble_en.ts'...
    Found 1571 source text(s) (2 new and 1569 already existing)
    Removed 3 obsolete entries
Split out translations list from mumble.pro.

TRANSLATIONS variable now in translations.pri in preparation
for transifex translation update script which will want to
adjust this list.
Transifex translation update
Mode: default
Minimum percent translated: 0
Matched 18 languages