Finish port away from custom translator.

Windows shell extension now uses ki18n for translation rather than ship our
own manual attempt at it. This is a tier1 library so it doesn't drag in other
dependencies. Qt will also be needed.
1 job for 1.8 in 23 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
failed #19650
build

00:00:23

 
Name Stage Failure
failed
build Build
E: Package 'gettext' has no installation candidate
E: Package 'qtbase5-dev' has no installation candidate
E: Unable to locate package libkf5i18n-dev
E: Unable to locate package libkf5coreaddons-dev
E: Unable to locate package libkf5iconthemes-dev
E: Unable to locate package libkf5parts-dev
E: Unable to locate package libkf5doctools-dev
E: Unable to locate package libkf5crash-dev
ERROR: Job failed: exit code 1