fix up trailing whitespace and put the buttons in the right order

src/components/views/dialogs/TextInputDialog.js

@@ -83,13 +83,12 @@ module.exports = React.createClass({
                     </div>
                 </div>
                 <div className="mx_Dialog_buttons">
-                    <button onClick={this.onOk}>
-                        {this.props.button}
-                    </button>
-
                     <button onClick={this.onCancel}>
                         Cancel
                     </button>
+                    <button onClick={this.onOk}>
+                        {this.props.button}
+                    </button>
                 </div>
             </div>
         );