version 3.11.91 - Work around non-existent Makefile during clean - Mark help images as untranslatable Delete translations of images that don't need them and of images that aren't used any more. - Review index and pref help for 3.12 - Update intro and features help for 3.12 - Post-release version bump to 3.11.91 - Added/Updated Translations - be, courtesy of Yuri Matsuk - cs, courtesy of Marek Černocký - fr, courtesy of Alain Lojewski - hu, courtesy of Gabor Kelemen - Added/Updated Documentation - cs, courtesy of Marek Černocký - es, courtesy of Daniel Mustieles - hu, courtesy of Gabor Kelemen