Migrate Clover-for-Grails release artifacts to new repository

According to information received from Grails developers, the SVN https://svn.codehaus.org/grails-plugins/ repository will no longer be used for keeping release artifacts and will become read-only.

Instead of this the Artifactory repository will be used for plugins.

Therefore, we should migrate our Clover-for-Grails plugin according to the following procedure:

http://grails.github.com/grails-howtos/en/migrateToTheNewCentralRepository.html

Affects: our build script

Open questions:
1) What about version compatibility. We support Grails 1.2 or later, but new release deployment mechanism requires Grails 2.0 or later - check if it will not interfere (I guess that should not)

2) What about old clover-for-grails releases? Should we migrate them to Artifactory as well?