Tests: Add more controller specs

[krissy]

What

We need to add more controller tests. Some have already been created but time constraints have prevented full coverage.

How

Add more controller specs (+ feel free to improve existing ones) covering all current actions, similar to tests living here: https://github.com/empowerhack/DrawMyLife-Service/blob/master/spec/controllers

Update 3rd June 2017 - Emily Woods
Lacking tests for helpers and decorators. Unit tests to be added for these.

Considerations

To Do

Pick me up! Good rspec practice.