[pgAdmin][RM4763][RM4762] Allow screen readers to identify errors and read description of non-textable elements.

Hi Hackers, Attached patch fixes RM4763 - Added role *alertdialog* for *confirm* and *alert* dialog. - Added role *status* for all status bars/banners. - Added role *alert* for error bars. RM4762 - Added *aria-labelledby* for charts on each dashboard, note that I have also

pgAdmin 4 commit: 1) Disable Fill Factor and Has OIDs control for the p

1) Disable Fill Factor and Has OIDs control for the partitioned table. 2) Added reloptions for the partitions and partitioned table. Branch -- master Details --- https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=6594481992dba7943a49524e0d3f99c026a88d34 Modified Files