Add cq:lastReplicationAction property to ignored list in the content package plugin

Currently the content package plugin includes the property cq:lastReplicationAction, but not the last publication date property, when downloading content from dam. this has a side effect, when activating a page with the reference to such an asset. Before activation the reference servlet tries to find any referenced assets, which may need activation as well. this results in a NPE, because the servlet tries to access the last replication date.