pgAdmin 4 commit: Ensure that the login account should be locked after

Ensure that the login account should be locked after N number of attempts. N is configurable using the
'MAX_LOGIN_ATTEMPTS'parameter. Fixes #6337 

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=a3d3c74e67cdc7d877a1a4a5a09e97a7b4396fc7
Author: Florian Sabonchi <sabonchi@posteo.de>

Modified Files
--------------
docs/en_US/login.rst                               | 15 ++++++---
docs/en_US/release_notes_5_6.rst                   |  1 +
web/config.py                                      |  8 +++++
web/migrations/versions/6650c52670c2_.py           | 33 +++++++++++++++++++
web/pgadmin/authenticate/__init__.py               | 37 +++++++++++++++++++---
web/pgadmin/model/__init__.py                      |  4 ++-
web/pgadmin/tools/user_management/__init__.py      | 16 +++++++---
.../user_management/static/js/user_management.js   | 13 ++++++++
8 files changed, 113 insertions(+), 14 deletions(-)