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/yarn.lock

@@ -4880,7 +4880,7 @@ math-expression-evaluator@^1.2.14:
 
 mattermost-redux@mattermost/mattermost-redux#webapp-master:
   version "0.0.1"
-  resolved "https://codeload.github.com/mattermost/mattermost-redux/tar.gz/6af89f1e58258a709601bf46ef7af2ab41d8d1f6"
+  resolved "https://codeload.github.com/mattermost/mattermost-redux/tar.gz/d1652dc7b636aae658d0d109919b6a74762a186d"
   dependencies:
     deep-equal "1.0.1"
     harmony-reflect "1.5.1"