initial untrustworthy XDCR destination support
added favicon image
Refactored out BucketPath() helper func.
Helper bucketpath tool.
No longer mixing server and CLI into one program.

So, the subcommands are gone.  The bucket-path subcommand had been
replaced in a previous commit with a tool/bucketpath utility program.

Because of this, the -verbosity int flag has now also been simplified
into just a -v bool flag.

cbugg: close bug-465

Current-h / help output...

    $ ./cbgb/cbgb -h
    usage: ./cbgb/cbgb <flags>

    flags:
      -addr=":11211": data protocol listen address
      -data="./tmp": data directory
      -default-bucket-name="default": name of the default bucket ("" disables)
      -default-persistence=2: persistence level for default bucket
      -default-quota=100MB: quota for default bucket
      -num-partitions=1: default number of partitions for new buckets
      -rest=":DISABLED": rest protocol listen address
      -static-path="static": path to static web UI content
      -v=true: amount of logging

    persistence levels:
      2: metadata persisted and ops persisted
      1: metadata persisted and ops not persisted
      0: nothing persisted
Too many b's appear while Load()'ing.

cbugg: close bug-476
Log the requested path when failing ns rest tests.
Create new test bucket with settings.

cbugg: close bug-477