Fix database structure definition, primary keys must be marked as this
Fix database structure definition, primary keys must be marked as this

fabrixxm/friendica,annando/friendica,friendica/friendica,friendica/friendica,tobiasd/friendica,annando/friendica,tobiasd/friendica,annando/friendica,fabrixxm/friendica,fabrixxm/friendica,tobiasd/friendica,fabrixxm/friendica,friendica/friendica,fabrixxm/friendica,annando/friendica,friendica/friendica,friendica/friendica,tobiasd/friendica,annando/friendica,tobiasd/friendica