WIP - sms users api
Code refactoring
Bugfix in smsuser API
Tweaks in smsuser api
Merge pull request #136 from lwyszomi/smsusers_api

SMSUsers API
Added location's migration and filtering in api by date and type
Merge remote-tracking branch 'upstream/tz-master' into location-api

Conflicts:
	logistics_project/apps/api/resources/v0_1.py
	logistics_project/apps/api/urls.py
Added date_updated field to location's model