ensure dagreaders are cleaned up after 'cat' command finishes

More preparatory refactors/fixes/cleanups for GCR  

log(bitswap) remove ambiguous event

Preparatory refactors/fixes/cleanups for GCR

we only actually care that it isn't tidle'd ~

fix FIXUP maybeRouter in core

fix(cmd/daemon) set node on req context since it expects daemon to be
present when handling commands over the API

@jbenet revenge of the request context redux

fix FIXUP repo -> config