PEP8
Draft attempt to reverse lat and lon if it is supposely in the wrong order
Merge branch 'master' into places-geoposition

* master:
  Updated to double backticks for literal markup
  Reworded HMAC definition
  Link in the table of contents
  Added docs for authentication with HMAC signed requests
  Index the authorization header as it should always be included
  Added docs and cemented the public API for HMACView
  Tests for HMAC authentication / failure states
  Updated HMAC with working implementation
  Update the base ApplicationException with custom headers
  WIP HMAC authentication view
Removed attempt to reverse
Removed check
Pass the correct status code from Solr
Generic error message for exception from solr
Merge pull request #40 from ox-it/places-geoposition

Places search: handle geolocation errors #38