Moodle 1.9 - Collapsed Topics and Weeks:
Dutch, German, French, Spanish (Spain, Mexico and International), Italian, Polish, Portuguese (Brazil too) and Welsh.
Moodle 2.0 - Collapsed Topics (Collapsed Weeks coming soon):
Dutch, German, French, Spanish (Spain, Mexico and International), Italian, Polish, Portuguese (and Brazil too) and Welsh.
This means that the words 'Collapsed Topics', 'Topic', 'Toggle' etc. should be translated.
I have used Google Translate to help me, so if any are wrong, then please message me or say on this thread.
Additionally, if there is a language you would like added, please just add the correct translations for the following words here and I will add it:
'Collapsed Topics', 'Collapsed Weeks', 'Toggle', 'Week', 'Topic', 'Enhancement' and 'General'.
If anybody would like Moodle 1.8 versions added - I will have a go, but my testing environment is currently problematic with Moodle 1.8 due to version of PHP etc. used.