MISC: added dependency to imagex_user_roles_permisions + page-specific permissions

## Ready State: YES

https://imagex.atlassian.net/browse/LDC-115
https://imagex.atlassian.net/browse/LDC-125

## Requirements & Dependencies

* No new dependencies

## Deployment Instructions

* Merge code.

## Usage/Test Instructions

* On install, confirm that all imagex_page permissions have been set appropriately