Attempt to fix missing sidebar in RTD
Removing toctree directive for RTD
Add API v3 items response doc to tests
Adding v3 JSON responses in subdir
Auth and API changes

API version and authentication are now sent via custom headers
WIP: Moving to pure JSON responses by default
Remove stray bracket
Fixing default headers
JSON WIP
Fix URL parameter addition
Fix link extraction from response header
Actually add the parsed links
We don't need to return at this point
First pass at item retrieval

Nothing has been properly tested at this stage
Remove IPDB import
Begin updating tests

Arghhhhh
JSON faffery

Removing JSON query component from tests
Specifying content format in mocked test responses
Renaming test response files
Renaming another test response doc
Fix URL parameter addition

Also ensures that a 'content' call will always ask for the correct (Atom) format