Reconsider the semantics of the CLI flag for daemon control.

[machawk1]

@ibnesayeed pointed out in a verbal conversation that the -d daemon control flag for ipwb controls the IPFS daemon and not an ipwb daemon, the latter which does not exist. This seems to break convention of daemon control (CITE). We should consider a flag that is more clear in the external interface, though can keep the same logic in the code.