message: Use translation in img alt text
diff: @@ -299,7 +299,7 @@ module.exports = React.createClass({
  blurToCancel={ false }
  onValueChanged={ self.onAliasAdded } />
  <div className="mx_RoomSettings_addAlias mx_filterFlipColor">
  - <img src="img/plus.svg" width="14" height="14" alt="Add"
  + <img src="img/plus.svg" width="14" height="14" alt={ _t("Add") }
  onClick={ self.onAliasAdded.bind(self, undefined) }/>
  </div>
  </div> : ""
  