pgAdmin 4 commit: Partition related fixes:

Partition related fixes:
1. When attaching a partition, tables were not loading in the dropdown.
2. When adding a sub partition in a partition, collations were not loading in dropdown.
3. Fix some grid column widths in table node.

Fixes #6783

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=0228d169901d5f262c7f15c549e4074b52c2d79f
Author: Aditya Toshniwal <aditya.toshniwal@enterprisedb.com>

Modified Files
--------------
.../foreign_key/static/js/foreign_key.ui.js        |   7 +-
.../tables/partitions/static/js/partition.js       |   2 +-
.../tables/partitions/static/js/partition.ui.js    |  46 +-
.../schemas/tables/static/js/partition.utils.js    | 595 ---------------------
.../schemas/tables/static/js/partition.utils.ui.js |  45 +-
.../databases/schemas/tables/static/js/table.js    |  37 +-
.../databases/schemas/tables/static/js/table.ui.js |   8 +-
web/pgadmin/browser/static/js/node_ajax.js         |  13 +-
web/pgadmin/static/js/SchemaView/DataGridView.jsx  |   3 +
web/webpack.shim.js                                |   1 -
10 files changed, 86 insertions(+), 671 deletions(-)