Fixed white projector live view in IE 10 (missing transform-origin).
Merge pull request #783 from emanuelschuetze/ie-fix

Fixed scaling issue in projector live view in IE 10 (missing transform-origin).
Fix whitespaces in translated strings.
Merge pull request #779 from normanjaeckel/FixTransStrings

Fix whitespaces in translated strings.
Fixes #765. Avoids the django AbstracUser username validator

Also changed added a white-space in the default username again
Documentation: Whitespace in the username, fixed #782