Permissions on documentLibrary folder for Private and Moderated sites is incorrect

[jpotts]

The add-on creates the documentLibrary folder for a site when the site is created but it does not check to see whether or not the site is Moderated or Private, so it does not set the permissions appropriately. Specifically, it leaves ACL inheritance turned on when it should be disabled for Moderated and Private sites.

Instead of creating the documentLibrary folder itself, the code should ask the Site Service to do it and the add-on shouldn't be concerned with such details.