WIP agenda ranges bug fixes
Disabling cache usage in plenum so that other parts of the site can use the cache
Merge branch 'cachefix' into upmaster
django.conf.urls.defaults deprecated; changed to django.conf.url
Initial fix for agenda ranges: API syntax works
remove debug prints
allow filtering votes that are ascribed to bills - to help content editors find unascribed votes
when a bill is tagged, also tag its related objects (votes and committee meetings), using signals. when tag is removed, also remove from related objects.
small PEP8 changes