Adjust morgan call to avoid deprecation warning

No Issue
- Change the invocation of the morgan logging package to
  conform to the new function signature introduced in
  morgan 1.2.0.
Merge pull request #4075 from jaswilli/morgan

Adjust morgan call to avoid deprecation warning
Naming cleanup

closes #4069
- Rename everything from camelCase to lowercase + dashes
- Remove usage of `server`, `app` and `instance`