Metacat

There is an error in DBQuery.findDocuments() where it is assumed that the next
parameter after a / in a url is the docid of a document. This was an old piece
of code that somehow got left in. It needs to be replaced with code that allows
for the format metacat://dev.nceas.ucsb.edu/berkley/servlet/metacat?docid=xxx
instead of just metacat://dev.nceas.ucsb.edu?docid=xxx