s/all_methods/default/g

- Change the key "all_methods" to "default" to better convey meaning
- Updated config keys to reference actual HTTP methods (makes intent
  clearer)
- Unset the "default" key once handled by the factory
s/(rules|rights)/privileges/g

- Replaced occurrences of "rules" or "rights" with "privileges" in both
  configuration and code.
- Moved "deny_by_default" setting under "authorization" heading
- Moved "rules" config to "authorization" heading
Merge branch 'hotfix/verbiage'

Close #8