pgAdmin 4 commit: Fix keyboard navigation in "inner" tabsets such as th

Fix keyboard navigation in "inner" tabsets such as the Query Tool and Debugger. Fixes #4195

Branch
------
electron2

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=891e073c97a388fc3caefdede2b56718e39430b6
Author: Aditya Toshniwal <aditya.toshniwal@enterprisedb.com>

Modified Files
--------------
docs/en_US/keyboard_shortcuts.rst                  |  20 ++--
docs/en_US/release_notes_4_9.rst                   |   1 +
web/pgadmin/static/js/keyboard_shortcuts.js        | 107 +++++++++++++--------
web/pgadmin/static/js/utils.js                     |   4 +
web/pgadmin/tools/debugger/__init__.py             |  26 ++++-
web/pgadmin/tools/debugger/static/js/direct.js     |  30 ++++--
web/pgadmin/tools/sqleditor/static/js/sqleditor.js |  58 ++++++-----
.../sqleditor/utils/query_tool_preferences.py      |  26 ++++-
web/pgadmin/utils/preferences.py                   |   2 +-
.../javascript/common_keyboard_shortcuts_spec.js   |  28 +++++-
web/regression/javascript/pgadmin_utils_spec.js    |  20 +++-
11 files changed, 227 insertions(+), 95 deletions(-)