added getter method for subchair recommendations
added code to subract DAYS from the conference due date.
added equals and hashCode methods
added equals and hashCode
added date to equality
completed assignPaper method
changed "No reviewer assigned" to "No subchair assigned".
changed frame title to "Conference Manuscripts".
update version
completed work on 'Assign Subchairs'
completed work on 'Assign Subchairs' dialog.
added misc test code for assigning recommendations
updated versions