Tweak docs, add sample responses
Adding chunked_attachments documentation
Adding audio clip categories
Merge commit 'baeb2d6e1a3ade110b950fa35256bd6de7b94b0e'

Conflicts:
	doc/api/sections/chunked_attachments.md
Add some examples to the category documentation
Mention the Accept version parameter, and deprecate xml responses
Merge api docs

Conflicts:
	doc/api/sections/categories.md
	doc/api/sections/request_formats.md