Glide in wms takeover

Record location changes in WMBS and Couch
    
    Whenever a job starts running, check the CMS site
    where it started and store in WMBS and the transition
    record in the JobDump in CouchDB. This ensures that
    WMStats has the proper monitoring information and
    runtime errors are attributed to the right site.

Disregard thresholds for jobs with multiple possible running sites. For monitoring purposes, report one random site in the possible site list as the 'pending' site.