Creating a professor name field on the SQL database, properly updating
older databases to include the professor name column. Also modified the
SubjectData model class.
Modifying the .iml file for the module, probably for changing the IDE to
Android Studio. Shouldn't be bothered about many changes in this kind of
file again.
Modifying the SubjectCard to display the professor name under the name of
the subject (currently no way of editing it though).
Modifying the edit dialog in order to create a way to change the professor
name from subjects (also on creation).
Fixing bug where the total number of absences wasn't updated after editing
one of the subjdects.