Delete untranslated

I translated all the traits and did some housekeeping.
I deleted the entire 'Untranslated' folder, because all those files are
in the Rimworld installation folder, and we already know which files are
translated if they are in the correct folders.
Delete About.txt

This file is from the template and is no longer needed.
Delete TODO.txt

This list is better maintained in the wiki.
Merge pull request #3 from Ludeon/delete-untranslated

I'm going to delete all the unnecessary files but I also will replace the 'Untranstlated' folder with proper templates.