Merge pull request #1348 from woogerboy21/fix_clientid_dbmigration

Add database migration script for client id

servatrice/migrations/servatrice_0002_to_0003.sql

+-- Servatrice db migration from version 2 to version 3
+
+alter table cockatrice_users add clientid varchar(15) not null;
+
+UPDATE cockatrice_schema_version SET version=3 WHERE version=2;