PLT-4202 fix javascript error manage OAuth2 apps (#4039)

* PLT-4202 fix javascript error manage OAuth2 apps

* Fix unit tests

model/authorization.go

@@ -311,6 +311,7 @@ func InitalizeRoles() {
 		[]string{
 			PERMISSION_CREATE_DIRECT_CHANNEL.Id,
 			PERMISSION_PERMANENT_DELETE_USER.Id,
+			PERMISSION_MANAGE_OAUTH.Id,
 		},
 	}
 	BuiltInRoles[ROLE_SYSTEM_USER.Id] = ROLE_SYSTEM_USER