add debug tests on sched table model
fix raw / generic JComboBox and JList to be compatible w/ 1.6 javac
fix tutor worth coef values in generating tuples
add test session tuples
modify schedule table to make it like look like it is a timetable
remove schedule table component from the scrollpane cuz it is already in one
update look & feel of table
add table initialization mecanism
add teacher's schedule display
clear table before fill it
remove debug println
add group and level's schedule retrieval
add level's sessions retrieval
change type of color to string to persist it correctly
modify how table and it's row header are rendered
set row height to fixed value
update look&feel of displayed sessions