Adding meta attribute to flattened-forms to tell us the languages in the form; this will later help us pull out the languages in the form.
Adding get-label, which should be used rather than :label when accessing field + option labels
Yay! Closes #551. Fixing NS, and adding form-fixtures.
adding get-label tests for "" and {}
Merge pull request #685 from onaio/551_multiple_languages

551 multiple languages