Turn group week view into general week view.

Closes #34 (closed)

biscuit/apps/alsijil/forms.py

@@ -3,7 +3,7 @@ from django.db.models import Count
 from django.utils.translation import ugettext_lazy as _
 
 from biscuit.core.models import Group, Person
-from biscuit.apps.chronos import Room
+from biscuit.apps.chronos.models import Room
 
 from .models import LessonDocumentation, PersonalNote