* 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
* Remove all mentions of Piwik
* Kill off all consumer of the old Piwik Analytics module
* Simplify ModalManager interface
* i18n
* Attempt to fix old e2e tests
* Remove unused component
* Iterate PR
* Document and support the established naming convention for config opts
This change:
* Rename `ConfigOptions` to `IConfigOptions` to match code convention/style, plus move it to a dedicated file
* Update comments and surrounding documentation
* Define every single documented option (from element-web's config.md)
* Enable a linter to enforce the convention
* Invent a translation layer for a different change to use
* No attempt to fix build errors from doing this (at this stage)
* Add demo of lint rule in action
* Fix all obvious instances of SdkConfig case conflicts
* Fix tests to use SdkConfig directly
* Add docs to make unset() calling safer
* Appease the linter
* Update documentation to match snake_case_config
* Fix more instances of square brackets off SdkConfig
