Change to new serving method

[jpbberry]

Breaking changes

• list.json no longer exists, instead replaced with aliases.json
• file_name is now fileName
• aliases can now be undefined
• images are no longer served on /assets, and instead are served on /api/cdn/:file_name
• cdn can now use an extension as well as not for it to figure it out on it's own
• base endpoints can also now use extensions