message: Allow pressing Enter to submit setMxId
diff: @@ -91,6 +91,12 @@ export default React.createClass({
  });
  },
  + onKeyUp: function(ev) {
  + if (ev.keyCode === 13) {
  + this.onSubmit();
  + }
  + },
  +
  onSubmit: function(ev) {
  this.setState({
  doingUIAuth: true,
  @@ -233,7 +239,10 @@ export default React.createClass({
  <div className="mx_Dialog_content">
  <div className="mx_SetMxIdDialog_input_group">
  <input type="text" ref="input_value" value={this.state.username}
  - autoFocus={true} onChange={this.onValueChange} size="30"
  + autoFocus={true}
  + onChange={this.onValueChange}
  + onKeyUp={this.onKeyUp}
  + size="30"
  className={inputClasses}
  />
  { usernameBusyIndicator }
  