added relational fields to list api
added main field to email fax phone and url
made adaptions in controller and adapted tests
fixed test issues
fixed bug in import test
fixed bug for adding bankaccounts
added phone as extra field to api
merged with develop
cleanup
fixed contactcontroller tests
Merge pull request #101 from sulu-cmf/feature/relational-list

[FEATURE] relational data in account/contact api