[Koha] More on Z39.50

Thanks for the testing! Your testing pointed out some small problems which I have corrected. I wasn't removing the '-'s from ISBN's. I am now. You can put in the dashes or leave 'em out. They'll be removed before querying the Z39.50 servers. I wasn't accessing the full AMICUS database at the National Library of Canada, so whoever searched for "Global action for biodiversity: an international framework for implementing the Convention on biological diversity" will find that it finds it successfully now. I've added a note saying how many records were found for each query in the queue. Now I really need to get full MARC support in Koha so that all of this data doesn't have to get mangled. :) Steve.