ObjectRate - Obs specific version
Merge commit 'f4cfb84265448459bd5d772fbb94c77806785b31'

Conflicts:
	object_rate/models.py

plus fixed 'unique_together'
fixed 'unique_together' on 'object_rate/models.py' (ObsRate)
fixed system to work with ObsRate instead of ObjectRate + disabled tmp vote system