Department/Classroom and Page Permission Changes

Developer Notes: 

• Improved operations with Resource Files in the new Post Editor more adequately suited for user permissions
• Added appropriate support to Classroom and Department Function for Classroom and Department Owners/Admins
• Fixed Privacy Logic when Pages have custom privacy configurations
• Fixed the Revisions in the New Post Editor for Pages with minimal configurations
• Fixed the Display of the Class/Dept Header in Classrooms and Department that utilize a theme