added some time.sleep to allow for certain GUI actions to complete. test_removefiles was failing on Windows. Not sure why only Windows but it might be more because it was on EC2
Merge pull request #1384 from hschilling/P44474497-multiple-file-remove

added some time.sleep to allow for certain GUI actions to complete. test...
Buttons for controls behave/look as switches.
Merge remote-tracking branch 'upstream/dev' into P48684225