Merge pull request #32 from brion/linkfix

Fix localizable formatted strings in About screen, part 1.
Localisation updates from http://translatewiki.net.
Add menu item on detail to edit cats -- not yet functional
Stub out a category removal class (not yet used or functional)
work in progress - xml parsing
Don't actually need XML for the category remover, use regexes. :P
work in progress
work in progress