Remove for loops and conditions in tests.

For loops and if conditions are sub-optimal in tests, for both
stability and readability. Removed and replaced with Theory run
features.
Though this adds some time to the detailed tests, it's more correct.
Fix AddLanguageTest.java

Broken in previous commit.
Merge pull request #53 from zanata/for-loops-in-tests-are-bad

Remove for loops and conditions in tests.