Change scroll bar in flex-panel

[geekgonecrazy]

@Morgul suggested this fix in chat. Figured i'd make an issue so we can keep up with the issue / potential fix.

http://noraesae.github.io/perfect-scrollbar/

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[marceloschmidt]

👍

[engelgabriel]

I dont like overwriting the native scrollbars... It always have a bad performance when the machine is busy. We will change the right flex-panel so the icons are in the top.

See https://chat.creators.co/ for reference.