pgAdmin 4 commit: Added support to launch PSQL for the connected databa

Added support to launch PSQL for the connected database server. Fixes #2341

Branches
--------
React_Porting
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=3ddf941cd772164c96767bd547346574bce3ed6a
Author: Nikhil Mohite <nikhil.mohite@enterprisedb.com>

Modified Files
--------------
docs/en_US/developer_tools.rst                     |   1 +
docs/en_US/images/psql_tool.png                    | Bin 0 -> 114999 bytes
docs/en_US/images/tool_menu.png                    | Bin 98642 -> 102416 bytes
docs/en_US/images/toolbar.png                      | Bin 42931 -> 42948 bytes
docs/en_US/menu_bar.rst                            |   2 +
docs/en_US/psql_tool.rst                           |  19 +
docs/en_US/release_notes_5_4.rst                   |   1 +
docs/en_US/toolbar.rst                             |   4 +-
requirements.txt                                   |   3 +-
web/config.py                                      |  19 +-
web/package.json                                   |   7 +-
web/pgAdmin4.py                                    |  23 +-
web/pgadmin/__init__.py                            |   7 +
.../browser/register_browser_preferences.py        |  24 +-
.../browser/server_groups/servers/__init__.py      |   8 +
.../servers/databases/static/js/database.js        |   3 +
.../server_groups/servers/static/js/server.js      |  11 +-
web/pgadmin/browser/static/js/collection.js        |  15 +
web/pgadmin/browser/static/js/node.js              |  19 +
web/pgadmin/browser/static/js/toolbar.js           |  23 +-
web/pgadmin/browser/static/scss/_browser.scss      |   6 +
web/pgadmin/browser/templates/browser/js/utils.js  |   4 +
web/pgadmin/browser/utils.py                       |   3 +-
web/pgadmin/static/bundle/browser.js               |   1 +
web/pgadmin/static/css/style.css                   |   2 +
web/pgadmin/static/scss/pgadmin.scss               |   5 +
.../static/scss/resources/_default.variables.scss  |   7 +
.../scss/resources/dark/_theme.variables.scss      |   7 +
.../resources/high_contrast/_theme.variables.scss  |   7 +
.../datagrid/static/js/datagrid_panel_title.js     |   4 +
web/pgadmin/tools/psql/__init__.py                 | 686 +++++++++++++++++++++
web/pgadmin/tools/psql/static/js/index.js          |  23 +
web/pgadmin/tools/psql/static/js/psql_module.js    | 429 +++++++++++++
.../tools/psql/templates/editor_template.html      |  58 ++
web/pgadmin/tools/psql/tests/__init__.py           |   0
web/pgadmin/tools/psql/tests/psql_test_data.json   | 184 ++++++
web/pgadmin/tools/psql/tests/test_backend_task.py  |  87 +++
web/pgadmin/tools/psql/tests/test_panel.py         |  36 ++
web/pgadmin/tools/psql/tests/test_psql_disabled.py |  34 +
web/pgadmin/tools/psql/tests/test_psql_input.py    | 148 +++++
.../tools/psql/tests/test_resize_terminal.py       |  58 ++
.../tools/psql/tests/test_socket_connect.py        |  35 ++
.../tools/psql/tests/test_socket_disconnect.py     |  52 ++
web/pgadmin/tools/psql/tests/test_start_process.py |  57 ++
.../tools/psql/tests/test_start_process_fail.py    |  48 ++
web/pgadmin/tools/psql/tests/utils.py              |   6 +
.../tools/sqleditor/static/scss/_sqleditor.scss    |  17 +
web/pgadmin/utils/csrf.py                          |   1 +
web/pgadmin/utils/preferences.py                   |   7 +-
web/webpack.config.js                              |   4 +-
web/webpack.shim.js                                |  11 +
web/webpack.test.config.js                         |   1 +
web/yarn.lock                                      |  77 ++-
53 files changed, 2267 insertions(+), 27 deletions(-)