Measure control bugfix: disable() failed when no drawing were made.
Measure control bugfix: disable() failed when no drawing were made.

Anaethelion/django-mapentity,makinacorpus/django-mapentity,Anaethelion/django-mapentity,makinacorpus/django-mapentity,Anaethelion/django-mapentity,makinacorpus/django-mapentity