Restructure endpoints to use noun in plural terminology
Adjusts userImportSummarySchema to support source field
Rename model var to not be user import specific. Add now fields to documents to support type and source.
Adds response codes and tries to control error output by enviroment
Merge pull request #8 from DoSomething/Issue1-Make_endpoint_names_RESTful

Issue1 make endpoint names RESTful
Merge pull request #9 from DoSomething/Issue4-Better_response_codes

Adds response codes and tries to control error output by enviroment
Merge conflict