[x] end session functionality (update button) @georgiayloff
[ ] create attendance log functionality
[ ] replace hard coded words with constants
[ ] check menu bar
[ ] (optional) allow a tutor to be assigned to more groups than 1 => first group is shown
[x] change detail list: show sessions instead of users. clicking on a session, you will be directed to a list of student.
[ ] add list view of students in a group: if a student attended that session, he is marked green, if not then red. add verifying attendance in that list view @georgiayloff
[ ] implement verify button in student view (group details) @georgiayloff + mai
View of tutor: