Fixed error
Names for course-activities
Schedule message status added
Route to check a proposal
List a program manager's messages
Updated query for adding proposal message
Query+API: List a program manager's messages
API+Query: get a message, apply proposals
API: proposal-apply! only applies when proposal passes all checks
API+Query: accept and reject proposal messages
Fixed minor typos
Updated SQL
Merge branch 'master' into nilsbranch