pgAdmin 4 commit: Fix PEP-8 issues in feature_tests, dashboard, about a

Fix PEP-8 issues in feature_tests, dashboard, about and misc module's python code. Fixes #3082

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=6f25f4d175482af42d64df524841728b493edf72
Author: Murtuza Zabuawala <murtuza(dot)zabuawala(at)enterprisedb(dot)com>

Modified Files
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web/pgadmin/about/__init__.py | 46 ++++----
web/pgadmin/dashboard/__init__.py | 76 ++++++++-----
.../copy_selected_query_results_feature_test.py | 112 +++++++++++++------
.../feature_tests/keyboard_shortcut_test.py | 51 ++++++---
.../feature_tests/pg_datatype_validation_test.py | 67 ++++++-----
.../feature_tests/query_tool_journey_test.py | 58 ++++++----
web/pgadmin/feature_tests/query_tool_tests.py | 123 +++++++++++++--------
.../feature_tests/table_ddl_feature_test.py | 34 +++---
web/pgadmin/feature_tests/view_data_dml_queries.py | 71 +++++++-----
.../xss_checks_panels_and_query_tool_test.py | 56 ++++++----
.../xss_checks_pgadmin_debugger_test.py | 35 ++++--
.../feature_tests/xss_checks_roles_control_test.py | 28 +++--
web/pgadmin/misc/__init__.py | 47 ++++----
web/pgadmin/misc/bgprocess/__init__.py | 1 -
web/pgadmin/misc/bgprocess/process_executor.py | 45 +++++---
web/pgadmin/misc/bgprocess/processes.py | 68 ++++++++----
web/pgadmin/misc/file_manager/__init__.py | 81 ++++++++------
17 files changed, 636 insertions(+), 363 deletions(-)