TODO: profile the console
Make sure the webkit backend returns the right headers when it's asked for request/response headers. Implemet retreival of raw header text.
io pretty printers need to return the pretty text, not insert it in the buffer themselves
Added raw-request-headers and raw-response-headers methods to the browser api
Improve buttons/sections in *JSS IO* buffers (tab jumps between sections, as it sholud, RET opens/closes them, as it should)