hourly late penalty function and tests
adding hourly penalty field
Merge branch 'master' of https://github.com/Stanford-Online/class2go into jbau-hourly-late-penalty
use days as rate instead of hours
loose ends--regrade, better way to display penalties
Merge pull request #2464 from Stanford-Online/jbau-daily-late-penalty

Jbau daily late penalty
Merge pull request #2454 from Stanford-Online/dca_copy_course_content

Dca copy course content
Very minor README editing
#2424 (columns in in-line quiz summary report are confusing)