Merge branch 'hotfix/content-negotiation-template'

Close #58
remove warning when array keys are unset
Merge pull request #60 from nsitbon/master

remove warning when array keys are unset
[#60] Aligned ternary statements

- For readability
Updated dev requirements

- Since we're defining functional tests for the controllers, needed a bunch of
  additional dependencies in order for the tests to run. Apparently, latest
  version of zendframework/zend-test is no longer adding them.
Merge branch 'hotfix/60' into develop

Forward port #60