pgAdmin 4 commit: 1) Fixed Tab key navigation for Maintenance dialog. F

1) Fixed Tab key navigation for Maintenance dialog. Fixes #4227
2) Fix Tab key issue for Toggle switch controls and button on the dialog footer in Safari browser. Fixes #4244

Branch
------
electron2

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=24379369d64989c53c20c6dd27f7cb5e76582618
Author: Aditya Toshniwal <aditya.toshniwal@enterprisedb.com>

Modified Files
--------------
docs/en_US/release_notes_4_7.rst                   |  2 ++
web/pgadmin/browser/static/js/collection.js        |  6 ++----
web/pgadmin/browser/static/js/node.js              |  6 ++----
web/pgadmin/static/js/backform.pgadmin.js          |  3 ++-
web/pgadmin/static/js/utils.js                     | 13 +++++++++--
.../tools/import_export/static/js/import_export.js |  7 ++++--
.../tools/maintenance/static/js/maintenance.js     | 25 ++++++++++++++--------
7 files changed, 40 insertions(+), 22 deletions(-)