adding basic status script. prints status of a file and its neighbors.  tests good on current db state.
fixed pernicious obsnum bug caused by putting in the wrong file length
increased db pool size to 20 and max overflow to 40. hopefully this will fix the sql timeout error we saw today
added more careful checking of the obsnum to the dbi test (though this would not have caught the most recent obsnum bug
removing still3 from the RAL test rack
added reverse obsnum lookup
clear off the stills before starting the end2end
adding little monitor program