UI Cleanup

[Kittyfisto]

• Change Follow Tail button to custom scroll down icon:

M 8 2 C 6.3 2 5 3.3 5 5 L 5 16 L 7 16 L 7 5 C 7 4.4 7.4 4 8 4 L 16 4 L 16 13.800781 C 16.6 13.400781 17.3 13.199609 18 13.099609 L 18 5 C 18 4.4 18.4 4 19 4 C 19.6 4 20 4.4 20 5 L 20 6 L 22 6 L 22 5 C 22 3.3 20.7 2 19 2 L 8 2 z M 9 6 L 9 8 L 14 8 L 14 6 L 9 6 z M 9 10 L 9 12 L 14 12 L 14 10 L 9 10 z M 9 14 L 9 16 L 13.800781 16 C 13.900781 15.9 13.9 15.799219 14 15.699219 L 14 14 L 9 14 z M 16.5 16.5 L 19.5 21.5 L 22.5 16.5 L 16.5 16.5 z M 2 18 L 2 19 C 2 20.7 3.3 22 5 22 L 13.800781 22 C 13.300781 21.1 13 20.1 13 19 L 13 18.400391 L 13 18 L 2 18 z 

• Change Maximize/Minimize/Close buttons to use white foreground colors instead of black
• Remove horizontal separator between "menu bar" and "icon bar" below
• Remove gray overlay when window is deselected, only the text and icons should be grayed out (compared to white when selected)