pgAdmin 4 commit: Allow admins to disable the use of Gravatar if theyc

Allow admins to disable the use of Gravatar if they choose. Fixes #3037

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=abf0b1a7ae0b57cf08ca196adc641f66868e20e5
Author: Murtuza Zabuawala <murtuza.zabuawala@enterprisedb.com>

Modified Files
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web/config.py                                      |  5 ++
web/pgadmin/browser/__init__.py                    | 24 ++++----
web/pgadmin/browser/static/css/browser.css         |  4 ++
web/pgadmin/browser/templates/browser/index.html   | 15 ++++-
.../templates/browser/macros/gravatar_icon.macro   |  8 +++
.../browser/macros/static_user_icon.macro          |  3 +
.../browser/tests/test_gravatar_image_display.py   | 68 ++++++++++++++++++++++
web/pgadmin/browser/tests/test_login.py            | 16 ++---
8 files changed, 122 insertions(+), 21 deletions(-)