Studio: Studio panel should allow dragging to wider/smaller widths

[jennifer-shehane]

Users should be able to drag the width of the Studio panel to be smaller or wider - with a max-width that is a reasonable % width of the window.

• Follow the same styling conventions that are used for dragging other panels in the App
• Ensure AUT scaling is maintained during resizing of Studio Panel (write test that ensures dragging panel shows the correct % in the scale tag)
• Ensure that the Studio panel cannot be dragged so small that the drag bar is lost (need a min-width)
• Ensure other panels elements collapse well enough at smaller widths