message: Only show apps button if labs feature enabled.
diff: @@ -315,6 +315,7 @@ export default class MessageComposer extends React.Component {
  }
  // Apps
  + if (UserSettingsStore.isFeatureEnabled('matrix_apps')) {
  if (this.props.showApps) {
  hideAppsButton =
  <div key="controls_hide_apps" className="mx_MessageComposer_apps" onClick={this.onHideAppsClick} title="Hide Apps">
  @@ -326,6 +327,7 @@ export default class MessageComposer extends React.Component {
  <TintableSvg src="img/icons-apps.svg" width="35" height="35"/>
  </div>;
  }
  + }
  const canSendMessages = this.props.room.currentState.maySendMessage(
  MatrixClientPeg.get().credentials.userId);
  