pgAdmin 4 commit: 1) Added support for Default Partition. Fixes #3938

1) Added support for Default Partition. Fixes #3938
2) Ensure that record should be add/edited for root partition table with primary keys. Fixes #4104

(cherry picked from commit a9d964b5ca04bbe00bf5585d5c19bdfdf603c8a9)

Branch
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electron2

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=19230aac881de2dc65b8a40306bc0a878a88d0e7
Author: Khushboo Vashi <khushboo.vashi@enterprisedb.com>

Modified Files
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docs/en_US/images/table_partition.png              | Bin 267206 -> 253015 bytes
docs/en_US/release_notes_4_6.rst                   |   2 +
docs/en_US/table_dialog.rst                        |   3 +-
.../schemas/tables/static/js/partition.utils.js    |  44 ++++++++++++------
.../databases/schemas/tables/static/js/table.js    |  51 ++++++++++++---------
.../schemas/tables/tests/test_table_add.py         |  26 +++++++++++
.../servers/databases/schemas/tables/utils.py      |  34 ++++++++++----
.../sqleditor/sql/11_plus/primary_keys.sql         |   8 ++++
8 files changed, 121 insertions(+), 47 deletions(-)