Removing imports reported as unused
Remove more unused imports
Temporarily revert changes to webadmin files to avoid conflict with #2127
Remove unused variables

When unused variables had previously been used in now commented out code,
they were commented out as well instead of completely removed.
Fix flake8 failures in gateway
Fix flake8 warnings in gateway
Remove Empty menu. (see #12157)
Fix typo and broken import
Remove commented out code
moving custom index page to the top
changing year in copyrights
Remove commented out code
Flake8 test_servants.py
Flake8 test_servants.py
Flake8 test_hdfstorage.py
Flake8 tablestest library.py
Flake8 test_prototypes.py
Flake8 test_processor.py
Flake8 test_parse.py
Flake8 test_tempfiles.py