PLT-3145 Custom Emojis (#3381)

* Reorganized Backstage code to use a view controller and separated it from integrations code

* Renamed InstalledIntegrations component to BackstageList

* Added EmojiList page

* Added AddEmoji page

* Added custom emoji to autocomplete and text formatter

* Moved system emoji to EmojiStore

* Stopped trying to get emoji before logging in

* Rerender posts when emojis change

* Fixed submit handler on backstage pages to properly support enter

* Removed debugging code

* Updated javascript driver

* Fixed unit tests

* Fixed backstage routes

* Added clientside validation to prevent users from creating an emoji with the same name as a system one

* Fixed AddEmoji page to properly redirect when an emoji is created successfully

* Fixed updating emoji list when an emoji is deleted

* Added type prop to BackstageList to properly support using a table for the list

* Added help text to EmojiList

* Fixed backstage on smaller screen sizes

* Disable custom emoji by default

* Improved restrictions on creating emojis

* Fixed non-admin users seeing the option to delete each other's emojis

* Fixing gofmt

* Fixed emoji unit tests

* Fixed trying to get emoji from the server when it's disabled

Makefile

@@ -180,12 +180,15 @@ ifeq ($(BUILD_ENTERPRISE_READY),true)
 
 	$(GO) test $(GOFLAGS) -run=$(TESTS) -covermode=count -c ./enterprise/ldap && ./ldap.test -test.v -test.timeout=120s -test.coverprofile=cldap.out || exit 1
 	$(GO) test $(GOFLAGS) -run=$(TESTS) -covermode=count -c ./enterprise/compliance && ./compliance.test -test.v -test.timeout=120s -test.coverprofile=ccompliance.out || exit 1
+	$(GO) test $(GOFLAGS) -run=$(TESTS) -covermode=count -c ./enterprise/emoji && ./emoji.test -test.v -test.timeout=120s -test.coverprofile=cemoji.out || exit 1
 
 	tail -n +2 cldap.out >> ecover.out
 	tail -n +2 ccompliance.out >> ecover.out
-	rm -f cldap.out ccompliance.out
+	tail -n +2 cemoji.out >> ecover.out
+	rm -f cldap.out ccompliance.out cemoji.out
 	rm -r ldap.test
 	rm -r compliance.test
+	rm -r emoji.test
 endif
 
 internal-test-web-client: start-docker prepare-enterprise