added select for navigation context
fixed nav contexts
fixed select showing values
fixed interface
added navigation save test
Merge branch 'feature/reorder-node' of git://github.com/sulu-cmf/SuluContentBundle into feature/navigation-context
added translations
removed unused file
fixed styling
Merge branch 'develop' of git://github.com/sulu-cmf/SuluContentBundle into feature/navigation-context

Conflicts:
	Resources/translations/sulu/backend.de.xlf
	Resources/translations/sulu/backend.en.xlf
added bundles to kernel dir
refactored app test folder and fixed test cases
fixed test case schema
Merge branch 'feature/navigation-context' into develop