update pwg_db_insert_id() function.
PosgreSQL needs table name to retrieve last insert auto increment id.
git-svn-id: http://piwigo.org/svn/trunk@4892 68402e56-0260-453c-a942-63ccdbb3a9ee
Using session_write_close function when session handler use database because write is called after object destruction.
git-svn-id: http://piwigo.org/svn/trunk@4781 68402e56-0260-453c-a942-63ccdbb3a9ee