HUE-2272 [fb] Improve UX of Copy/Move modal windows

Updated copy/move modals to replace filebrowser toggle/input box with a more descript selected destination path
Updated z-index for tooltips to be visible in modal windows
refactored lining issues in filechooser plugin
added space between definitions
HUE-2319 [fb] Do not offer file scrolling when offsets are not supported

Added check to fileArea scroll event that tests if compression type is 'gzip', disables navigation and displays warning message.