Add initial CMakeLists file
Add script to extract translatable strings from level files
Add initial translation infrastructure
Update all level files with the new translation infrastructure
Add ScriptName to the list of translatable strings
Revert fuckups from previous commits
Make all translatabale strings level-specific
Update all level files with the new translation infrastructure
Split po4a configuration in categories

This has the advantage of dividing the translation in logical blocks
that are then dispatcheable amongst different translators.
Prepare the addition of Polish
Re-write categories setup
Inject translations in level files at build time
Document changes in Changelog
Merge branch 'dev' of github.com:colobot/colobot-data into dev

Conflicts:
	CHANGELOG.txt