* Spike AXE A11Y testing in Cypress
* Fix NewRoomIntro breaking html/aria list rules
* Fix HeaderButtons breaking aria role semantics rules
* missing type
* Switch left panel from aside to nav and include space panel
* Give the page a main heading of the room name when viewing a room
* Use header landmark on RoomHeader
* Improve aria attributes on composer when autocomplete is closed
* Fix aria-owns on RoomHeader
* Give Spinner an aria role
* Give server picker help button an aria label
* Improve auth aria attributes and semantics
* Improve heading semantics in use case selection screen
* Fix autocomplete attribute to be valid
* Fix heading semantics on login page
* Improve Cypress axe testing
* Add axe tests
* Stop synapse after the timeline tests
* Await spinners to fade before percy snapshotting timeline tests
* Improve naming of plugin
* Update snapshots
* Fix accidental heading change
* Fix double synapse stoppage
* Fix Cypress timeline avatar assertions to be DPI agnostic
* Fix aria attributes on date separators
* delint
* Update snapshots
* Revert style change
* Skip redundant call
* Show chat panel when opening a video room with unread messages
* Remove unnecessary calls to private methods in tests
* Make room ID mandatory when toggling the right panel
* Restore the isViewingRoom check
* Test RightPanelStore
* Make the constructor private again
* Add even more tests
* Fix onReady
* Remove deprecated feature_communities_v2_prototypes
* Update _components
* i18n
* delint
* Cut out a bit more dead code
* Carve into legacy components
* Carve into mostly the room list code
* Carve into instances of "groupId"
* Carve out more of what comes up with "groups"
* Carve out some settings
* ignore related groups state
* Remove instances of spacesEnabled
* Fix some obvious issues
* Remove now-unused css
* Fix variable naming for legacy components
* Update i18n
* Misc cleanup from manual review
* Update snapshot for changed flag
* Appease linters
* rethemedex
* Remove now-unused AddressPickerDialog
* Make ConfirmUserActionDialog's member a required prop
* Remove useless override from RightPanelStore
* Remove extraneous CSS
* Update i18n
* Demo: "Communities are now Spaces" landing page
* Restore linkify for group IDs
* Demo: Dialog on click for communities->spaces notice
* i18n for demos
* i18n post-merge
* Update copy
* Appease the linter
* Post-merge cleanup
* Re-add spaces_learn_more_url to the new SdkConfig place
* Round 1 of post-merge fixes
* i18n
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>
