added basic session adding for admins
Add a getter for list of students>
Attendance class
Added dateparser class to get day of week
Merge branch 'devM' of https://github.com/GUCSTeamH/PSD3-Group-Exercise-One into devM
Added changeAttendance method to Attendance
Fixed some variables
Fixed lots of compile errors(hopefully) and added Tutor attendance monitoring from csv(might be working?)
resolved merge conflicts