[noticket] Fix CSS. There is no Grunt yet on this branch, so generated dgu.css from dgu-main.less using bin/watch_dgu_css. Had to add in the Inventory CSS into dgu-main.css. BTW My copy of less appears to remove semi-colons in the CSS, compared to Toms version. Removed dgu.less which was added incorrectly in 04c26e25b6c3253 (it is part of Grunt workflow).