pgAdmin 4 commit: Modified some logic for the EPAS server as the user c

Modified some logic for the EPAS server as the user can change the view definition without dropping it. Fixes #5053

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=030741bba55ce2420567d46e269099a8a1c53cfb
Author: Khushboo Vashi <khushboo.vashi@enterprisedb.com>

Modified Files
--------------
.../servers/databases/schemas/views/__init__.py    | 71 ++++++++++++++--------
.../databases/schemas/views/static/js/view.js      |  2 +-
.../templates/views/pg/9.4_plus/sql/delete.sql     |  2 +-
.../templates/views/pg/9.4_plus/sql/update.sql     | 17 ++++--
.../pg/9.4_plus/alter_view_add_some_priv_msql.sql  |  4 ++
.../pg/9.4_plus/alter_view_definition_msql.sql     |  4 ++
.../schemas/views/tests/pg/9.4_plus/tests.json     | 18 ++++++
7 files changed, 88 insertions(+), 30 deletions(-)