updated ContentNavigation
fixed tests
added groups for serializer
Merge branch 'feature/api-entities' of git://github.com/sulu-cmf/SuluCategoryBundle into feature/api-entities
added additional check for translations
Merge branch 'develop' of git://github.com/sulu-cmf/SuluCategoryBundle into feature/api-entities
merged with develop
removed testlog file
Merge branch 'feature/api-entities' of git://github.com/sulu-cmf/SuluCategoryBundle into feature/api-entities
fixed some issues with empty collections
fixed issue
Merge branch 'feature/api-entities' of git://github.com/sulu-cmf/SuluCategoryBundle into feature/api-entities
fixed code issue
Merge branch 'feature/api-entities' into develop
Merge branch 'feature/api-entities' of git://github.com/sulu-cmf/SuluCategoryBundle into develop
fixed typo
Merge branch 'feature/api-entities' into develop
Merge pull request #19 from sulu-cmf/feature/content-navigation-refactoring

[FEATURE] updated ContentNavigation
fixed tests
updated version numbers