MISC: update to include node-specific permissions .  Enabled moderation, added dependency to roles/permissions

This was created with admin role configuration defined in linux doc.
but I think we'll have to break this out further for linux & imagex  .  Thoughts?

## Ready State: Yes

https://imagex.atlassian.net/browse/LDC-115
https://imagex.atlassian.net/browse/LDC-125

## Requirements & Dependencies
* imagex_user_roles_permissions

## Deployment Instructions

* Merge code.

## Usage/Test Instructions

* On install, confirm  imagex_news permissions have been set appropriately