changes how height and width are calculated when rendering a complex sbgn shape cherry-picked from 1ac01ad45916f9eb7b834f4a77c34e71bfb5c3f0
changes how height and width are calculated when rendering a complex sbgn shape
cherry-picked from 1ac01ad45916f9eb7b834f4a77c34e71bfb5c3f0

PathwayCommons/sbgn-renderer,d2fong/sbgn-renderer,PathwayCommons/sbgn-renderer,d2fong/sbgn-renderer