Add Scrup compatible service
Add Scrup compatible service

[Scrup][0] is a reasonably popular application at $WORK, but isnt being
developed anymore. This adds a service compatible with how scrup works -
screenshot in the request body, and url retrieved from the remote
server rather than generated locally.

There's obviously some overlap with the http_post module. If that module
could get get the URL of the uploaded screenshot from the remote server
I'd have probably just re-worked my reciever to grok form data, but I
didnt want to fudge the preferences or adopt that behaviour implicitly
so I knocked this together quickly.

[0]: https://github.com/rsms/scrup

lukasmcd14/Pussh,teak/Pussh,lukasmcd14/Pussh,lukasmcd14/Pussh,teak/Pussh