[Popup] 'SVGGraphicsElement' is undefined in IE 11

[HitomiTenshi]

Using the current next version (e9aca44) I encountered an error when adding popups to SVGCircleElements on IE 11. No errors on Firefox or Chrome.

Error: 'SVGGraphicsElement' is undefined
semantic.js (10387,13)

The line in question is:
if(target.width === 0 && target.height === 0 && SVGGraphicsElement && !(target.element instanceof SVGGraphicsElement)).

Changing it to:
if(target.width === 0 && target.height === 0 && (typeof SVGGraphicsElement === undefined) && !(target.element instanceof SVGGraphicsElement))

fixed the error for me and displayed the popup correctly on IE 11.

[jlukic]

Thanks, related #3043