Improve OL.String.format() to allow for more advance tokens like ${foo.bar}

[rdewit]

Once we support these advanced tokens, we can quite easily implement ExtendedData handling in KML where you have constructs like $[holeNumber/displayName]. This would be translated in Format.KML to ${holeNumber.displayName}.
It will also be possible to access 'infinitely' nested objects like ${a.b.c.d.e.f} directly.

[rdewit]

Duplicate of #1956

[crschmidt]

(In [8907]) Change ordering of termsOfUse/copyright removal, so we get the right CSS class names. Patch from #1858. (See #1958). r=me