PLT-5699 Improvements to channel switcher (#6486)

* Refactor channel switcher to not wait on server results

* Change channel switcher to quick switcher and include team switching

* Add sections, update ordering and add discoverability button

* Fix styling error

* Use CMD in text if on mac

* Clean yarn cache on every install

* Various UX updates per feedback

* Add shortcut help text for team switcher

* Couple more updates per feedback

* Some minor fixes for GM and autocomplete race

* Updating UI for channel switcher (#6504)

* Updating channel switcher button (#6506)

* Updating switcher modal on mobile (#6507)

* Removed jQuery usage

* Rename function to toggleQuickSwitchModal

webapp/components/quick_switch_modal/index.js

@@ -0,0 +1,16 @@
+// Copyright (c) 2017 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import {connect} from 'react-redux';
+import {getMyTeams} from 'mattermost-redux/selectors/entities/teams';
+
+import QuickSwitchModal from './quick_switch_modal.jsx';
+
+function mapStateToProps(state, ownProps) {
+    return {
+        ...ownProps,
+        showTeamSwitcher: getMyTeams(state).length > 1
+    };
+}
+
+export default connect(mapStateToProps)(QuickSwitchModal);