sqldb: use the new schema

We put this new schema update into the main line and change the
versions of the schema updates which are currently only available
in dev builds. The schemas need to be chronological therefore we
also need to rename the file numbers.

sqldb/migrations_prod.go

@@ -2,4 +2,9 @@
 
 package sqldb
 
+// migrationAdditions is a list of migrations that are added to the
+// migrationConfig slice.
+//
+// NOTE: This should always be empty and instead migrations for production
+// should be added into the main line (see migrations.go).
 var migrationAdditions []MigrationConfig