EventSchedule start time should be in hours range of the conference.Therefore it adds validation on start_time attribute of event schedule model. It also adds test for the same.
Previous implementation was associating resources with all
the roles regardless of user role in the resource. ie:
if user is cfp member of conf1, the method was returning:
{ organizer => conf1,
cfp => conf1,
Info Desk => conf1,
Volunteers Coordinator => conf1
}
