Merge remote-tracking branch 'origin/develop' into fork_develop

core/data/schema/versions/CORE_1_rollback.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `frontend_session`
+DROP COLUMN `ip`;

core/data/schema/versions/CORE_2_upgrade.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `frontend_session`
+ADD `ip` CHAR(15);