message: hardcode logged url to riot.im/app so piwik has a base to work with, it gets confused when a CustomURL isn't actually a URL (like it wasn't after the latest redaction fixes.
diff: @@ -20,9 +20,9 @@ import PlatformPeg from './PlatformPeg';
  import SdkConfig from './SdkConfig';
  function getRedactedUrl() {
  - const base = window.location.pathname.split('/').slice(-2).join('/');
  const redactedHash = window.location.hash.replace(/#\/(room|user)\/(.+)/, "#/$1/<redacted>");
  - return base + redactedHash;
  + // hardcoded url to make piwik happy
  + return 'https://riot.im/app/' + redactedHash;
  }
  const customVariables = {
  