minor changes
fixing merge conflict with Dr. Hovemeyer
Created and completed exerciseSummaryItem, exerciseSummaryView, and the components in the css file. exerciseSummaryView is instantiated in CoursesAndProblemsPage2, and is fully functional.
amending last commit to include ExerciseSummaryItem and ExerciseSummaryView
final commit for the fall semester. working functionality on User Account Page and the home page.
use reflection to generate self-signed cert and add it to keystore

The issue is that the CertAndKeyGen class, which we use
to generate the cert, moved from sun.security.x509.CertAndKeyGen
to sun.security.tools.keytool.CertAndKeyGen in JDK 1.8.