* Remove display of Key backup signatures
This is *fiddly* to support in Element-R, and we don't really think it's
offering any value.
* update snapshot
* clean up i18n
* split SettingsSection out of SettingsTab, replace usage
* correct copyright
* use semantic headings in GeneralRoomSettingsTab
* use SettingsTab and SettingsSubsection in room settings
* fix VoipRoomSettingsTab
* use SettingsSection components in space settings
* settingssubsection text component
* use semantic headings in HelpUserSetttings tab
* use ExternalLink components for external links
* test
* strict
* lint
* semantic heading in labs settings
* semantic headings in keyboard settings tab
* semantic heading in preferencesusersettingstab
* tidying
* use new settings components in eventindexpanel
* findByTestId
* prettier
* semantic headings and style refresh for crypto settings
* e2e panel
* test cross signing panel
* strict
* more strict
* tweak
* test eventindexpanel
* strict fixes
