Fix whitespaces in translated strings.
Merge pull request #779 from normanjaeckel/FixTransStrings

Fix whitespaces in translated strings.
Some template and doc fixes
- Fixed #766 (agenda overview parent item look).
- Fixed #767 (Documentation sphinx bootstrap theme: html header)
- Fixed #785 (Enlarged doc screenshots by hover via CSS)
- Updated sphinx-bootstrap-theme to 0.2.4
- Add btn class for agenda end time tooltip
Fix issues when starting portable from a non-ascii path
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
Merge pull request #775 from ostcar/issue-765b

Fixes #765. Avoids the django AbstracUser username validator
Merge pull request #786 from emanuelschuetze/1.4-fixes

Some template and doc fixes
Merge pull request #787 from andkit/fix-761

Fix issues when starting portable from a non-ascii path (#761)