printi Channels

[fonsp]

Password-protected subdomains (printi.me/channel) that multiple printers can listen to. Will require:

• printi API has to cache every image for a fixed amount of time, and assign a unique identifier.
• printi API has to serve a (JSON) list of cached images in the channel, and should serve any image from cache by its identifier
• printi API cache cleaning needs to be improved
• printi client must allow multiple names to listen to
• printi client must check channel list, maintain a personal list, and download any new images

Password protection requires:

• authentication for printi API
• registration of channel name/pwd combinations (email verification? pwd reset?)