Rename answer model into global answer
Migrate to individual answers up and down

* Update model
Switch to individual answers on public and editor parts

* Update json indexes in templates
* Synchronize individual answers with global in each question
* Use answer title to avoid empty global title
Gracefully degrade for mb_str* usage
Add answer idividuality part
Edit answers titles
Add individual answers textareas and toggles
Create individual answers from text
Take individual answers into account when determining can edit scores

* Clean up old trash code from there
Update locale for individual answers
Fix UI test for disappearing page

* Self update composer to increase speed of build
* More correct check for "Not found" page
Test individual answers

* Migration of existing test
* Individual scores not cleared by quick fill
* Individual scores has title from answers
* Answers synced with global answers, saving scores
* Individual answers taken for can edit scores
* Add indanswers from text
* Edit global answers title for the question
* Removing individual answers by empty title
Merge branch 'issue/individual-answers' into develop