squashed from larz/linux-scrollbar
Updated based on Jason's feedback.
Removed test selector.
Added @TomMalbran's new less file that consolidates all scrollbar styles.
Removed quiet scrollbar styles as they're all in brackets_scrollbars.less now.
Updated link.
Cleaned up a bit.
Removed linux scrollbar style.
Fixed based on @TomMalbran's feedback.
Updated year.
Merge branch 'master' of https://github.com/adobe/brackets into larz/linux-scrollbar-sqaushed
Removed base64 PNGs as they're no longer required.
Fixed quiet scrollbar based on @TomMalbran's feedback.
Merge pull request #5083 from adobe/larz/linux-scrollbar-sqaushed

Larz/linux scrollbar