Implement web-ifc-three interface in web-ifc

[josesoutoleon]

In order to use web-ifc when graphical interfase is not requerid it would be useful to implement the same interface that web-ifc-three has.
Of course just an interfase subset, all fumcrions related to graphical interfase has no meaning.

[agviegas]

Solved, you can now access webIfcAPI.properties to have the same property handling logic.