Refs #16938 Naaya; Refs #17553 Naaya; now use GoogleMaps api v2; also added a few missing methods to OpenLayers JS engine

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs@20473 a0171fae-0946-0410-966d-b1775066cd26
Set date for release in changelog.rst

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs@20474 a0171fae-0946-0410-966d-b1775066cd26
Set version to 3.3.21 unreleased

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs@20475 a0171fae-0946-0410-966d-b1775066cd26