Fix and update the admin language management tests

Add Feature inventory annotation
Fix added language check in project
Update to assertj
Update project version tests to assertj

Also add feature annotations
Clean up and streamline some tests
Update project search test to assertj
Merge pull request #515 from zanata/assertj-search-test

Update project search test to assertj
Merge pull request #514 from zanata/assertj-projectversion

Update project version tests to assertj
Merge pull request #510 from zanata/assertj-language-tests

Fix and update the admin language management tests