This reverts 4d619d71b1 (see #1527), going back to what we had after e13075f6ff (see #881).
To avoid the 404 in the hosted examples, the css is copied to the same relative path when hosted as during development.
By simply defining the ol3 map as control on a GMaps map, we can
have a Google base map with arbitrary ol3 content on top. This
works with all ol3 renderers.
