- Added service initialisation method to service so the "health" of the service can be determined
- Unit tests do not fail if the google doc service has not been configured correctly
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@20046 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
