Fixed sorting in activeadmin 1.0
forgot that to_sql will have an argument passed
Compatibility fix for activeadmin-1.0
Fixed Travis build
Merge branch 'activeadmin-1.0' of github.com:fred/activeadmin-mongoid into fred-activeadmin-1.0

Conflicts:
	lib/active_admin/mongoid.rb
Merge branch 'fred-activeadmin-1.0' into rails4-filter-fix