Peer mark

Allow other candidates to mark a candidate's response.

Related items
This concept is found in the following usecases:
 * is found in::Mark Assessment (Peer Assessment)
 * is found in::Notify Post Assessment
 * is found in::Peer Assessment
 * is found in::Run Assessment

This concept is a subclass of the following concepts:
 * is a subclass of::Mark (E-Assessment Processes)

This concept is found in the following Use Cases:
 * is found in::Peer Assessment
 * is found in::Mark Assessment (Peer Assessment)
 * is found in::Run Assessment