The Blog app should not be listed in the Navigation Panel

The reason it's listed is because Blog.WebHome is configured in the pom.xml as customizable and the Navigation Panel removes apps that have a top level page of a type that denies editing.

What needs to be done:

• The Blog config should be moved to a BlogConfig page
• The Blog home page type should be put back as a standard type (ie denying edit)
• A migrator should be provided to move the blog configuration