pgAdmin 4 commit: Fixed issues reported by SonarQube.

Fixed issues reported by SonarQube.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=d4a3e4d92c397fc8789f3f5dde45c61c04138bf1
Author: Nikhil Mohite <nikhil.mohite@enterprisedb.com>

Modified Files
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.../browser/register_browser_preferences.py        | 10 ++---
web/pgadmin/misc/file_manager/static/js/utility.js | 20 ++++-----
web/pgadmin/preferences/__init__.py                |  6 +--
web/pgadmin/tools/debugger/static/js/debugger.js   | 12 ++---
.../tools/debugger/static/js/debugger_ui.js        |  4 +-
.../tools/debugger/static/js/debugger_utils.js     |  2 +-
web/pgadmin/tools/sqleditor/static/js/sqleditor.js |  1 -
web/pgadmin/utils/driver/psycopg2/connection.py    |  1 -
web/pgadmin/utils/preferences.py                   | 51 ++++++++++++----------
9 files changed, 56 insertions(+), 51 deletions(-)