tested the extra petition stuff.  added a null set for inital value of date decision for extra petitions.
tested the extra petition stuff.  added a null set for inital value of date decision for extra petitions.

git-tfs-id: [https://tfs.caes.ucdavis.edu:8088/tfs]$/Commencement/Trunk/Commencement;C8094

ucdavis/Commencement,ucdavis/Commencement,ucdavis/Commencement