pgAdmin 4 commit: Misc fixes for the pgAgent module:

Misc fixes for the pgAgent module:

1) User was allowed to enter start date ahead of end date while scheduling a job. Fixes #2921

2) Datetime picker was not displaying in the grid (sub-node collection control). Fixes #1749

3) Fixed UI issue where validation error was not displaying properly for Datetime control.

Branch
------
WEBPACK_DEVEL2

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=d0ba29fbae9e3a705a26b47f7b711cd744396bff
Author: Murtuza Zabuawala <murtuza.zabuawala@enterprisedb.com>

Modified Files
--------------
web/pgadmin/static/js/backform.pgadmin.js | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)