pgAdmin 4 commit: 1. Unverified email id is getting locked.

1. Unverified email id is getting locked.
2. Admin should be able to lock the user, as currently it only unlocks it via
user management dialog.
3. There were some indefinite login page loading issues when trying to log in
with invalid password, where it should redirect to the login page again instead.

refs #6337 (Initial patch by Khushboo Vashi)

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=ab04b307264079b9ac01a5ba7bcedb1d93ae5eea
Author: Rahul Shirsat <rahul(dot)shirsat(at)enterprisedb(dot)com>

Modified Files
--------------
docs/en_US/getting_started.rst | 1 +
docs/en_US/images/add_user.png | Bin 63481 -> 48112 bytes
docs/en_US/images/login_attempt_user.png | Bin 0 -> 189021 bytes
docs/en_US/images/user.png | Bin 52992 -> 53787 bytes
docs/en_US/restore_locked_user.rst | 50 +++++++++++++++++++++
docs/en_US/user_management.rst | 2 +
web/config.py | 4 ++
web/pgadmin/authenticate/__init__.py | 2 +-
web/pgadmin/tools/user_management/__init__.py | 7 ++-
.../user_management/static/js/user_management.js | 3 --
10 files changed, 63 insertions(+), 6 deletions(-)