message: Show correct error message when password too short when signing up (lib)
diff: @@ -2264,9 +2264,6 @@ error Context::Signup(
  TogglClient client(UI());
  std::string json("");
  error err = signup(&client, email, password, &json, country_id);
  - if (kBadRequestError == err) {
  - return displayError(kCheckYourSignupError);
  - }
  if (err != noError) {
  return displayError(err);
  }
  @@ -5438,6 +5435,9 @@ error Context::signup(
  HTTPSResponse resp = toggl_client->Post(req);
  if (resp.err != noError) {
  + if (kBadRequestError == resp.err) {
  + return resp.body;
  + }
  return resp.err;
  }
  