pgAdmin 4 commit: 1) Fix issue where SSH tunnel connection using passwo

1) Fix issue where SSH tunnel connection using password is failing, it's regression of Master Password. Fixes #4320
2) Fix some more issues related to SSH Tunnel(By: Akshay Joshi)

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=a588c2994da949db8043b50f74470b2feaae3506
Author: Aditya Toshniwal <aditya.toshniwal@enterprisedb.com>

Modified Files
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docs/en_US/release_notes.rst                             |  1 +
docs/en_US/release_notes_4_9.rst                         | 16 ++++++++++++++++
.../browser/server_groups/servers/static/js/server.js    | 10 +++++-----
.../servers/templates/servers/tunnel_password.html       |  2 +-
web/pgadmin/utils/driver/psycopg2/server_manager.py      | 13 ++++++++++---
5 files changed, 33 insertions(+), 9 deletions(-)