Update git submodules

* Update translations from branch 'master'
  - Galician: remove duplicated string that breaks help creation
    
    causes a segfault in helpex.
    Galician help is full of syntax errors – whatever tool the translators
    use for offline translation is pretty broken – but those don't break the
    build.
    
    Change-Id: I31a21a84ed3c732dd97b2f8e443b53443483bafc
    

translations @ 8ac78587

-Subproject commit 43ecc0b75a09ae6167f7368d056a3efbbbd1ae9e
+Subproject commit 8ac785874f36764b40593b4c4d33b1a5848b4cc1