Limit 100 row per table where many rows, Bug fixes

Description

Limit 50 rows added or changed(where was 100). Checkup reports glue fixed.

Related issue

https://gitlab.com/postgres-ai-team/postgres-checkup/issues/329

https://gitlab.com/postgres-ai-team/postgres-checkup-tests/blob/master/329-dmius-limit-50/md_reports/1_2019_03_14T05_45_24_+0000/Full_report.md#postgres-checkup_H003

Closes #329 (closed)