* Move popover types to separate file
* tmp
* open top
* Fix bug with keyboard navigation
* Fix bug with scroll
* Fix mobile
* Add popover header class
* Display nested items on mobile
* Refactor history
* Fix positioning on desktop
* Fix tests
* Fix child popover indent left
* Fix ts errors in popover files
* Move files
* Rename cn to bem
* Clarify comments and rename method
* Refactor popover css classes
* Rename cls to css
* Split popover desktop and mobile classes
* Add ability to open popover to the left if not enough space to open to the right
* Add nested popover test
* Add popover test for mobile screens
* Fix tests
* Add union type for both popovers
* Add global window resize event
* Multiple fixes
* Move nodes initialization to constructor
* Rename handleShowingNestedItems to showNestedItems
* Replace WindowResize with EditorMobileLayoutToggled
* New doze of fixes
* Review fixes
* Fixes
* Fixes
* Make each nested popover decide itself if it should open top
* Update changelog
* Update changelog
* Update changelog