timeseries.common.append: fixed bug in gap
timeseries.common.append: fixed bug

    - if len(other) > len(self) and resize=False, need to scroll the new
      timeseries (other) as well and not actually record all of its data
io.nds.host_resolution_order: use $NDSSERVER

    - CDS@LLO uses NDSSERVER env variable for host ordering, so we
      should use that, if it exists
    - this method now doesn't return the NDS server for the other IFO,
      i.e. an L1 search wont return the ligo-wa server
io.nds: removed pcdev4 test server