Moderator is not forced to delete a comment or to let it pending:
Workflow has two more states "rejected" and "spam" to existing review workflow.
Moderation view extended showing all states. Filter by state.
This is part of PloneHotfix20161129.
Updated metadata.xml version to 1000. This leaves more room for
profile version increases in earlier releases. We apply the rolemap
step again to avoid accidentally missing it.