[Inbox] Enable Blueprint Admins to send a Message to Students of all/selected Associated Courses

[DeteesWuber]

Problem statement:

Blueprint administrators can only select individual courses to send a message to all students in those courses. They cannot select all/selected associated courses to send a message to all students in those courses. Therefore, in order to send a message to all students in all associated courses, an announcement must be created and sent in the Blueprint course. Therefore, the Inbox message options in the Blueprint course settings cannot yet be used effectively.

Proposed solution:

Please allow Blueprint administrators to use the Inbox to communicate with students. People who have an admin role in a Blueprint course should be able to select their Blueprint course in the inbox and also select all/selected associated courses to contact students. For our use case, a collective message to all students would be sufficient.

User role(s):

admin