Initial support for GTK3 widgets of Xfce
Tweaked scrollbar to have better visibility in dark theme
Initial Pantheon support
More tweaks
Update GTK2 scrollbars to match GTK3
Add style for .primary-toolbar .menu
Style menu in Ubuntu Software Center. Fixes #60
Restyled notebook tabs
Make notebook tabs pointed
Recolor shade button
Merge remote-tracking branch 'shimmer/master' into MaxKh-version