ActionController::HttpAuthentication Refactoring

[aaron-collier]

This replaces #154 with a rebased and updated version.

[coveralls]

Coverage increased (+0.2%) to 95.6% when pulling 6cf1afe on rebased_154 into ea643fb on master.

[aaron-collier]

https://github.com/sul-dlss/stacks/blob/rebased_154/spec/features/iiif_spec.rb#L17

The current spec error is the result of the current_user in the call above looks like:
#<User:0x007fc29d96a430 @ip_address="127.0.0.1", @anonymous_locatable_user=true>

Causing the token auth to fails because an anonymous_locatable_user is not a token_eligible_user. Thoughts/feedback from @mejackreed here?

[cbeer]

Does Bearer on line 17 need to be Token to match the upstream change?

[coveralls]

Coverage increased (+0.9%) to 96.707% when pulling 0d4a471 on rebased_154 into 61435d1 on master.

[coveralls]

Coverage increased (+0.9%) to 96.707% when pulling 0d4a471 on rebased_154 into 61435d1 on master.

[coveralls]

Coverage increased (+0.9%) to 96.707% when pulling 8225a1a on rebased_154 into 61435d1 on master.

[coveralls]

Coverage increased (+0.9%) to 96.707% when pulling 8225a1a on rebased_154 into 61435d1 on master.

[coveralls]

Coverage increased (+0.9%) to 96.707% when pulling 452372b on rebased_154 into 61435d1 on master.

[coveralls]

Coverage increased (+0.9%) to 96.707% when pulling 452372b on rebased_154 into 61435d1 on master.