Create a GET route to get the assessments from the DB

[chrislaupama]

We will need to be able to feed our Assessment Content to the client-side of our application.

Create a GET route which feeds this content via our API, something like /assessments could work.

Tasks:

• [x] Refer to the wiki to see how the routes may need to be setup.
• [x] Create the route.
• [x] Create db function.
• [x] Write tests for this route.
• [x] Write tests for db function.

[mxbialostocki]

Estimated completion time 1500 03/05/2019