Add kiwi and "wideband" configuration files

wideband covers the entire morepork/weka/kiwi range, which is useful
for seeing wehat is going on in general.
raise the top end of weka frequency window
Allow server to be run on a specified list of files

This is used by a script in recur that creates scripts like this:

dummy_dbm=$(mktemp -u --suffix=.dbm)
cd "/home/douglas/sonograms"
./server.py -t '/tmp/doc-sample.txt' --dbm-file=$dummy_dbm -s wideband \
   --include-wav-dir=doc-training-2011-12 \
   --include-wav-dir=doc-training-2012-13 --timed-files-only
rm $dummy_dbm