"Permissions changed" for activity pages

[madprime]

The activity page update didn't include logic for handling when an activity's "requested permissions" have changed since they joined and authorized.

These should include changes to…

• consent/terms
• having access to username
• data sources the member is sharing with an activity

These items are all stored at the time they are granted for a member when they join/authorize. They will need to do that again to update them.

An activity that has changed these relative to when it was joined/authorized should notify the member and allow them to redo the join/authorize process. Currently:

• no notification is visible
• a member can't see that the permissions they previously granted
• no prompt to redo join/authorize