Updated FormGroup to use the bootstrap3 CSS classes to show validation errors.
Merge pull request #251 from captSL/bootstrap3

Updated FormGroup to use the bootstrap3 CSS classes to show validation e...
Use spaces instead of tabs.
No functional changes
Merge branch 'bootstrap3' of https://github.com/tahitiangabriel/wicket-bootstrap into tahitiangabriel-bootstrap3
Merge remote-tracking branch 'upstream/bootstrap3' into bootstrap3

Conflicts:
	bootstrap-extensions/src/main/java/de/agilecoders/wicket/extensions/markup/html/bootstrap/icon/FontAwesomeIconTypeBuilder.java