Merge remote-tracking branch 'nik/develop' into develop

Conflicts:
	Squeezer/build.gradle
	gradle/wrapper/gradle-wrapper.properties
Merge remote-tracking branch 'nik/develop' into develop

Conflicts:
	gradle/wrapper/gradle-wrapper.properties
Update current playlist when the current player

changes.
Update the Transifex config.

- Correct the file filter, so that files are transferred to/from the correct
  locations.

- Add a language map to just use language specific directories for the
  moment.
Correct instructions about release branches.

Format paths correctly.