implemented extract format
Merge branch 'develop' of git://github.com/sulu-cmf/sulu into feature/request-format
fixed code style and added . replace for url
Merge branch 'develop' of git://github.com/sulu-cmf/sulu into feature/request-format
added more fields to twig templates
updated tests
Merge branch 'feature/request-format' into develop
fixed null value bug
extracted conversion of comparator
Merge pull request #236 from sulu-cmf/bugfix/list-builder-null-values

[BUGFIX] fixed null value bug for where fields in ListBuilder
Merge branch 'develop' into feature/index-definition