Progress using rdf model to link fastqs with flowcell/lib metadata.

Progress using rdf model to link fastqs with flowcell/lib metadata.

I changed how I was using rdf:type -- the most raw data is now
a 'sequencer_result' and now there's a seperate file_type
attribute to indicate what kind of result file it is.

I renamed find_missing_targets to update_fastq_targets as
in addition to finding what fastqs we need to generate it'll
also download missing flowcell information.

I'm still having trouble fishing out the fastq files so this isn't
ready yet.

Finally minor tweaks to the soft file formatting to try
and get it to render everything without spurious spaces.