PLT-6987 User access token UI (#7007)

* Add user access token UI

* Fix enter press and update mattermost-redux

* Updating UI for access token stuff (#7066)

* Revert segment key

store/sql_user_store.go

@@ -62,7 +62,7 @@ func NewSqlUserStore(sqlStore SqlStore) UserStore {
 		table.ColMap("Nickname").SetMaxSize(64)
 		table.ColMap("FirstName").SetMaxSize(64)
 		table.ColMap("LastName").SetMaxSize(64)
-		table.ColMap("Roles").SetMaxSize(64)
+		table.ColMap("Roles").SetMaxSize(256)
 		table.ColMap("Props").SetMaxSize(4000)
 		table.ColMap("NotifyProps").SetMaxSize(2000)
 		table.ColMap("Locale").SetMaxSize(5)