Resolves issue #609, Added validators and sanitizers for role creation and update

[brettp]

Closes Issue #609

Summary

Added additional data validation and sanitization for role fields in POST and PUT requests

Important Changes

src/middleware/middleware.js

• Added validator isFlatStringArray() and sanitizer toUpperCaseArray()

src/controller/org.controller/index.js

• Refactored controllers to use new validator and sanitizer
• Code cleanup

Testing

Steps to manually test updated functionality, if possible:

POST /org/:shortname/user - Confirm each of the follow values for the active_roles field fails with a 400 status, valid JSON response, and error Parameter must be a one-dimensional array of strings

• [[ "ADMIN" ]]
• { "a": "ADMIN" }
• [{ "a": "ADMIN" }]

PUT /org/:shortname/user - Confirm the following query strings fail with the same error as above:

• active_roles.add[][a]=CNA
• active_roles.add[][CNA]

POST /org - Repeat the same process as the POST create user endpoint

PUT /org/:shortname - Repeat the same process as the PUT update user endpoint

Notes

• HTTP tests are included.