pgAdmin 4 commit: Added check if the Windows version is not supporting

Added check if the Windows version is not supporting the ConPty or WinPty disable the PSQL for that version.

refs #2341

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=09693d14d1cba5f07f12648d12d8f1aec5498306
Author: Nikhil Mohite <nikhil.mohite@enterprisedb.com>

Modified Files
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docs/en_US/psql_tool.rst                           |  6 ++
web/pgadmin/__init__.py                            |  2 +-
web/pgadmin/browser/__init__.py                    |  3 +-
.../browser/register_browser_preferences.py        | 68 +++++++++++-----------
web/pgadmin/browser/templates/browser/js/utils.js  |  2 +-
web/pgadmin/tools/psql/__init__.py                 |  7 ++-
6 files changed, 50 insertions(+), 38 deletions(-)