Updated to Salesforce 31.0 Summer '14
Updated to Django 1.7 RC2
Renamed DJANGO_1x to DJANGO_1x_PLUS
Replaced print by logging in backend
Never should be implemented raw aggregate count().

It is due to Django conventions about required 'id' field.
Fixed cursor for directly executed SOQL aggregate queries.
Implemented defer(..) and only(..) queryset methods
Enabled and improved tests for deferred fields queries
Tested the minimal number of queries for defer(..) and only(..)
Fixed configurable primary key name id/Id. added tests
Preserved order in get_classes_texts to improve reusability.
Fixing too many verbose names
bump for verbose_names