(1) refactor of geoJSON & SVG source loader and management.
(2) remove the support of "load multiple geoJSON or SVG in one map name". This feature is never documented and published. And this feature have a inherent problem that it's not easy to normalize the unit among the different SVG. After this commit, one map name can only have one geoJSON or one SVG.

fix: fix that in lazyUpdate mode the final state of elements will be rendered firstly and then start normal animation.

fix: [geo select state] fix that dispatchAction({ type: 'geoToggleSelect', ... }) now work immediately.

Avoid states transition stops update animation.