message: Treat 404 errors on IS as having no terms
  Fixes
diff: @@ -153,6 +153,30 @@ export default class SetIdServer extends React.Component {
  // Double check that the identity server even has terms of service.
  const terms = await MatrixClientPeg.get().getTerms(SERVICE_TYPES.IS, fullUrl);
  if (!terms || !terms["policies"] || Object.keys(terms["policies"]).length <= 0) {
  + this._showNoTermsWarning(fullUrl);
  + return;
  + }
  +
  + this._saveIdServer(fullUrl);
  + } catch (e) {
  + console.error(e);
  + if (e.cors === "rejected" || e.httpStatus === 404) {
  + this._showNoTermsWarning(fullUrl);
  + return;
  + }
  + errStr = _t("Terms of service not accepted or the identity server is invalid.");
  + }
  + }
  + this.setState({
  + busy: false,
  + checking: false,
  + error: errStr,
  + currentClientIdServer: MatrixClientPeg.get().getIdentityServerUrl(),
  + idServer: this.state.idServer,
  + });
  + };
  +
  + _showNoTermsWarning(fullUrl) {
  const QuestionDialog = sdk.getComponent("views.dialogs.QuestionDialog");
  Modal.createTrackedDialog('No Terms Warning', '', QuestionDialog, {
  title: _t("Identity server has no terms of service"),
  @@ -172,22 +196,6 @@ export default class SetIdServer extends React.Component {
  this._saveIdServer(fullUrl);
  },
  });
  - return;
  - }
  -
  - this._saveIdServer(fullUrl);
  - } catch (e) {
  - console.error(e);
  - errStr = _t("Terms of service not accepted or the identity server is invalid.");
  - }
  - }
  - this.setState({
  - busy: false,
  - checking: false,
  - error: errStr,
  - currentClientIdServer: MatrixClientPeg.get().getIdentityServerUrl(),
  - idServer: this.state.idServer,
  - });
  };
  _onDisconnectClicked = async () => {
  