+ simplify css/html
+ save button and autosave checkbox just like in config-dialog
+ generalize can-close-on-esc
+ add `props` parameter to helpPopup.show
+ deduplicate usage of #help-popup id
+ uniform padding in popups
+ disambiguate style settings from editor options
* Add: style settings
* Change: use radio instead of select for dark/light mode
* Change: x -> Delete
* Change: (in|ex)clusion messages
* Fix: avoid extra space when there is no rule
* Fix: UI in mobile
* Change: delete priority
* Change: use textarea for include/exclude, remove isCodeUpdated
* Fix: separate toggle
* Fix: minor
* Fix: remove codeIsUpdated in styleman
