[PATCH] Tables node (pgAdmin4)

Hi,

Please find initial patch for tables node.

This patch includes below nodes,

1) Tables node
2) Columns node
3) Index node
4) Trigger node
5) Constraints node (Primary key & Unique constraints only) *-- From:
Harshal*
6) Roles node
*-- From: Surinder*

This patch also includes "VacuumSettings control" required by table node.

Please apply Fieldset Control UI patch sent earlier.

*Please note that constraint node is still partial, It has Primary Key &
Unique constraint working & integrated in tables node.*

1) I have used initial patch of index constraints node from Harshal &
further extend it it to work with table node.
[ Harshal will integrate rest of constraints in tables node, he is working
on it.]

2) I have also used initial patches of rules node and VacuumSettings
control from Surinder & further extend them it to work with table node.

--
Regards,
Murtuza Zabuawala
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company