Added Hours To Timer

Added hours to quiz timer for admins who have quizzes with time limits over an hour.
Added Hours To Completion Time

Added hours to the completion time for users who may have taken longer than an hour to complete the quiz.
Added Hours To Completion Time

Added hours to completion time for quiz takers who took longer than an hour to complete the quiz
Merge pull request #50 from fpcorso/feature/timer_show_hours

Add Hours To Quiz Timer And Completion Time