LMS-826 add to db schema the modification timestamp to the project table

openbis/source/sql/generic/031/schema-031.sql

...bis/source/sql/postgresql/migration/migration-030-031.sql

...urceTest/sql/postgresql/031/013=database_version_logs.tsv

openbis/sourceTest/sql/postgresql/031/032=projects.tsv

openbis/sourceTest/sql/postgresql/031/schema-031.sql