add limits endpoint for otter api
fix lint errors
use config_value instead of hard coding in rest/limits.py
update limits and tests to pull config data from normal resources vs being hard coded
move setup stuff into setUp
use existing self.root object instead of creating a new one for request
Merge branch 'master' into add_limits_endpoint
lint fix
Merge branch 'master' into add_limits_endpoint

Conflicts:
	otter/rest/application.py
Auto-634 Remove the Underscore in arbitrary log fields
Expose headers to the APIError exception
Fix tests
Fix mock speccing to be more clear, thanks @dreid
Merge pull request #393 from rackerlabs/auto-545-nova-request-ids

Expose headers to the APIError exception
Merge branch 'master' into add_limits_endpoint
Add absolute limits to the example config.json
Correct for the config limits keyword to have an extra subkey 'pagination'
lint fix
Rename 'number'
Just type out data