Enable reverse path for Person FK on PersonalNote.

biscuit/apps/alsijil/models.py

@@ -5,7 +5,7 @@ from biscuit.core.mixins import SchoolRelated
 
 
 class PersonalNote(SchoolRelated):
-    person = models.ForeignKey('core.Person', models.CASCADE)
+    person = models.ForeignKey('core.Person', models.CASCADE, related_name='personal_notes')
 
     week = models.IntegerField()
     lesson_period = models.ForeignKey('chronos.LessonPeriod', models.CASCADE)