Coverage for direct links.
The direct link won't work because it will have the wrong auth anyway but this will at least end up with the right API call.
Standardizes shebang and coding declarations.
Coding matches what's used by install tools such as pip(x).
Removes a few init files that were not needed.
Add check to verify token was received.
Update headers sent to content API.
Add availability check for videos to resolve last part of #472 where only SD version is available.
Soulsuck24