- Added the GRID localization strings to the US English file.
- Updated the umbControlGroup directive so that the Description files are now localized, for some reason only the label was being localized even though the text had been added to the UK English file?
Removed "description" as Shaz pointed out this was not required.
Fixed a couple of UK English spelling mistakes.
Merge pull request #570 from readingdancer/Fix_for_U4-5911

Fixed issue U4-5911 & part of U4-5101 - Allow descriptions on property editors to be localized