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.
The original decision to avoid index.html was because it only works with a build step. Since we've all accepted a build step, the more sensible name is index.html. Without this change, every hosted example has a link to http://openlayers.github.com/ol3/master/examples/example-list.html which 404s.
Make sure the object structure returned is not mangled by Closure
Do not use closure XHR or JSON in the example
Use Jasmine's async support in the test cases
Get rid of some backwards compatibility now that we have a fresh start
