PLT-7567: Integration of Team Icons (#8284)

* PLT-7567: Integration of Team Icons

* PLT-7567: Read replica workaround, upgrade logic moved, more concrete i18n key

* PLT-7567: Read replica workaround, corrections

* PLT-7567: upgrade correction

store/sqlstore/upgrade.go

@@ -365,8 +365,10 @@ func UpgradeDatabaseToVersion471(sqlStore SqlStore) {
 }
 
 func UpgradeDatabaseToVersion48(sqlStore SqlStore) {
+
 	//TODO: Uncomment the following condition when version 4.8.0 is released
 	//if shouldPerformUpgrade(sqlStore, VERSION_4_7_0, VERSION_4_8_0) {
+	sqlStore.CreateColumnIfNotExists("Teams", "LastTeamIconUpdate", "bigint", "bigint", "0")
 	//	saveSchemaVersion(sqlStore, VERSION_4_8_0)
 	//}
 }