The old fix copied a hack used for the date, which only worked on
development builds (oops). This fixes both the header for "from:" and
for date-type inputs properly.

* Removing SuggestionStore.

* Fixing clicking mention in popover.

* Fixing laggy text manipulation.

* Feedback fixes

* Close channel autocomplete if multiple tildes are typed

* Cancel dispatch on slower connections to prevent autocomplete re-opening

* add eslint-plugin-header, and --fix all

While the checking feature of this plugin seems to work great, its --fix
will sometimes removing leading comments when the license header doesn't
match. I've hand-edited the over-zealous removals, so this won't be an
issue going forward except for new files with missing headers but
leading comments.

* fixes from latest master changes

* latest changes from master

* PLT-8306 Removed code to wait for results while autocompleting

* Reorganized some code in the SuggestionBox

* 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

* PLT-5860 Updated copyright date in about modal

* PLT-5860 Updated copyright notice in JSX files

* PLT-5860 Updated copyright notice in go files

* Fixed misc copyright dates

* Fixed component snapshots