bug-fix: language is enum choice not string edit
Merge remote branch 'origin/release' into qa
bug-fixes: first round after qa update to 0.1.3

- add null check to test_entry that allows
empty intrusions for completing an ajdudicate entry
- minor style and doc updates
- remove constraint on FAS test set up of variant
dictionary for text input autocompletes
- fix javascript bugs to allow and update empty word
entries during adjudication
- dynamically add new words to autocomplete source
in transcribe and adjudicate pages
- fix javascript bug to enable text inputs during
test_entry_ranked_word adjudications as required
- fix bug with 'All' checkbox unchecking when text inputs
are enabled during test_entry_ranked_word adjudications