start implementing client support for FR
create a new answer when submitting a free-response
refactor for change from addAnswers to addAnswer in endpoint
submit the vote
show AJAX status w/ highlights
todo comment
delete old answer when new answer to FR question is saved
form styling
implement createsurvey support for FR
log an error
implement FR for admin.html
fix visual feedback if answer is unchanged
Merge pull request #183 from isaacdontjelindell/issue-81-free-response

Implement free response (FR) question type