Merge pull request #23 from fqqb/small-stuff

Small stuff
Expose Yamcs archive through a web api

A first go at a web api, it uses chunked transfer because we
don't want to store to a temp file just because of the
content-length. Chunks can be pretty small, they are aligned
with the incoming data from the ReplayServer.

Only parameters & packets are supported, and profiles are
supposed to be predefined in <cache-dir>/profiles/
Add test for INT/FLOAT conversion
Add a toString to ContainerExtractionResult

It was popping up in the logs a bit too often