Multiple ZIM Archives (`version2`)

[danielbarry]

A feature request to load multiple ZIM files. People interested in hosting a single ZIM archive are likely to want to host multiple ZIM archives.

This might look like:

ZIMServerCollection([{filename, index_file, template}, {..}, ..], ip_address, port, encoding)

Each ZIM archive would be on a different directory (localost:port/wiki1/.., localhost:port/wiki2/..). Each would be a separate client. You would then have a simple wikipage on the index to choose each ZIM archive.