First step of combination.
Use new method.
catch 202 early
Remove dead code
Escape manifest IDs when hunting the network container.

This makes it possible to have manifests with _ in the ID.  I'm not sure we
want to allow this, but we do for now.  I hope to follow this up with a deeper
change to make this a bit more robust.
Fix nil/[]byte{} consistency, and other review comments.
Merge pull request #219 from thockin/netctr

Escape manifest IDs when hunting the network container.
Merge pull request #205 from lavalamp/api2

Small client refactor; interpret 202 responses
Added a proxy server to cloudcfg
Update the proxy server.