Fix video progress with new exam template #1718
Merge pull request #1778 from Stanford-Online/kluo-1718-fix-video-progress

Fix video progress with new exam template #1718
Fix spacing between buttons

Add margin-right of .5em to all buttons within exam-navigation div,
remove margin-left from saveWorkBtn

	modified:   templates/exams/view_exam.html
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work