message: Add Droppable to GroupView
  to contain the GroupTiles as Draggables
diff: @@ -17,6 +17,7 @@ limitations under the License.
  import React from 'react';
  import PropTypes from 'prop-types';
  import GeminiScrollbar from 'react-gemini-scrollbar';
  +import { Droppable } from 'react-beautiful-dnd';
  import sdk from '../../index';
  import { _t } from '../../languageHandler';
  import dis from '../../dispatcher';
  @@ -74,7 +75,13 @@ export default withMatrixClient(React.createClass({
  contentHeader = groupNodes.length > 0 ? <h3>{ _t('Your Communities') }</h3> : <div />;
  content = groupNodes.length > 0 ?
  <GeminiScrollbar className="mx_MyGroups_joinedGroups">
  + <Droppable droppableId="my-groups-droppable" type="draggable-TagTile">
  + { (provided, snapshot) => (
  + <div ref={provided.innerRef}>
  { groupNodes }
  + </div>
  + ) }
  + </Droppable>
  </GeminiScrollbar> :
  <div className="mx_MyGroups_placeholder">
  { _t(
  