Release JOSM damn plugin version 0.12.0

This release introduces translation of strings on Transifex and CI/CD
configuration to push them automatically when adding new code and to
download them automatically when releasing new version of the damn
plugin.

Jiri Vlasak (6):
      Merge branch 'f'
      Merge branch 'f'
      Add website to build gradle config
      Review strings for translations
      Add tx config
      Add transifex task to CI/CD (build) config