Merge pull request #4 from DF1E/master

update german
Added themes support. App theme is now dark, but default is light (better looks black window at start then light one if dark theme is set).
Removed getTypeIcon from GenericFile. Instead, type icons are stored in BrowserBaseAdapter cache.
Icons are now shown without using overlays. Symlink overlays are now can be applied without losing the mimetype icon of a file.