Handle spinner custom text differently differently to fix issue #1837 problem with activation/deactivation and updategfxSlider
Merge branch 'master' of https://github.com/math07/stk-code into working
Fix a typo regarding my latest commit on issue #1837
Use translations in achievements
Merge remote-tracking branch 'Math07/working'
Fix translation problems in random GP screen
Unify random GP's ID and translatable name in a single place
Don't translate internal "nextgen" track group
Restore tab name in tracks screen to avoid problems with gettext and to keep consistency with arenas/easter egg screens