changed array to collection
updated navigation
adjusted security settings for test environment
updated to latest validation lib
implemented testing with security
corrected changed interface usage
Merge pull request #5 from sulu-cmf/feature/content-api

create content api
fixed merge conflicts
cleaned code
Merge branch 'feature/form-generation' into develop
replaced creator and changer with contact names, adjusted tests, testconfiguration
merged with develop
adjusted test config