Add the Feature summary annotation to Dashboard tests

Also use static variables for page messages
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 #505 from zanata/add-feature-summary-dashboard

Add the Feature summary annotation to Dashboard tests
Rename version group test

'Full' is misleading.
Update version group tests to assertj, add Feature annotation
Update clientserver tests to assertj

Also add Feature annotations and do some reformatting
Merge pull request #519 from zanata/assertj-versiongroup-tests

Update version group tests to assertj, add Feature annotation
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
Merge pull request #493 from zanata/update-to-assertj-clientserver

Update clientserver tests to assertj
Fix test failure
Remove some unused messages
Fix property key
Alias zanataMessages to messages; implement Map
Replace EL in messages.properties with positional parameters

Also disable EL interpolation in ZanataMessages