message: Fix logging for failed searches
  error is an object so appending it to a string is not helpful
diff: @@ -1203,7 +1203,7 @@ export default createReactClass({
  });
  }, function(error) {
  const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
  - console.error("Search failed: " + error);
  + console.error("Search failed", error);
  Modal.createTrackedDialog('Search failed', '', ErrorDialog, {
  title: _t("Search failed"),
  description: ((error && error.message) ? error.message : _t("Server may be unavailable, overloaded, or search timed out :(")),
  