Remove Piwik support (#8835)

* 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

src/utils/RoomUpgrade.ts

@@ -99,7 +99,7 @@ export async function upgradeRoom(
         if (!handleError) throw e;
         logger.error(e);
 
-        Modal.createTrackedDialog("Room Upgrade Error", "", ErrorDialog, {
+        Modal.createDialog(ErrorDialog, {
             title: _t('Error upgrading room'),
             description: _t('Double check that your server supports the room version chosen and try again.'),
         });