apply panel-body instead of heading; use teammatesCommon.css
restore br tag
add style for no-response message
enhance table's style
better number question style for submission
remove mismatched Div, which causes layout overflow when > 3 courses in studentHomePage
Modify the studentCourseDetails page
Merge branch 'Issue2009' into bootstrap
Merge remote-tracking branch 'origin/bootstrap' into Issue2019