Fixes #13698

This commit redesign the polls and increases characters limit for the
options from 25 to 50 characters, giving pollsters more freedom.

Summarizing, the redesign is making the polls more adaptive for upcoming
changes to the options characters limit: the bar, or a "chart", is now
displayed separately from the option itself; vote check mark is moved
next to the option text, making the percentages take less space. Option
lengths are taken into account and text is wrapped to multiple lines
if necessary to avoid overflow.

* JS-linter: fix trailing comma's

* Configure eslinter to ignore this onchange error.

This reverts commit 054ef83fc5.

* Fix poll options not being selectable via keyboard

Fixes #12384

* Improve styling of poll option checkboxes/radio buttons

* Use more appropriate ARIA roles for poll options

* Allow switching between single and multiple choice from keyboard

* Coding style

* Avoid using .bind()

- Disable the “add option” button instead of hiding it
- Allow poll option inputs to scale to full width

* Refactor selectComposeSuggestion so that different paths can be updated

* Add suggestions in CW field

* Add emoji suggestion to poll options

* Attempt to fix CSS

* Hide suggestions by default

They will be enabled if the input has focus

* Add actions and reducers for polls

* Add poll button

* Disable media upload if poll enabled

* Add poll form

* Make delete & redraft work with polls