Update count functionality to work around group_by alias bug
Fix for breaking ActiveRecord tests
#572 Add failing specs gto allow Travis to show extent of problem across different versions of AR
#572 #431 fix count issues
#572 Add special case for ActiveRecord 3.0, falling back to string interpolation.
#572 Fix group-by count specs for AR 4.1
Merge branch '572-grouped-count'

Conflicts:
	lib/kaminari/models/active_record_relation_methods.rb