Style / button customizations + moving svg limits

[SmileHub]

Using uncontrolled component atm, however would be nice to have:

• edge mouseOver doesn't get canceled when mouse leaves the area (functions for navigation to be able to turn on / off + function to stop the navigation)
• miniature is a little bit bogus (doesn't display svg in proper scale)
• onClick to be called also in the PAN mode + mouse coordinates to be reported in the onPan event

that's it from my brain storming.

Other resolved:

• prop to render custom controls => found sollution: use UncontrolledReactSVGPanZoom with custom controls and configure toolbarProps={toolbarProps}

const toolbarProps = {
		position: 'none'
	};

• change background behind SVG => found sollution: background="transparent"
• have some sort of control on how far the user can move the svg (limits sort of to the edges of the svg) => found sollution: preventPanOutside={true}