Merge pull request #22 from PCCMathProgramReview2014/chris-work

more work in the appendix
added csv with grades data
Merge pull request #23 from PCCMathProgramReview2014/alex-work

added csv with grades data
Added Excel grades data; added processed csv grades data; made a few time plots of enrollment and pass rates for DL discussion in section 3
Merge pull request #24 from PCCMathProgramReview2014/alex-work

Added Excel grades data; added processed csv grades data; made a few tim...
removed unneeded data and graphic files
Merge pull request #25 from PCCMathProgramReview2014/alex-work

removed unneeded data and graphic files
changed figure includement to use standalone package: this allows for consistent font choice and better looking graphics. Moved pgfplotstableread command from preamble to main document