HCSVLAB-245 (partial): Rejig the document model so that there is a 'primary_text' datastream on an Item. Change the ingest slightly to (a) fill in the primary_text datastrteam on an item and (b) make saving the item the last thing which happens to that Item upon ingest (this, coupled with reordering the lines in the Item model, means that the last message Fedora sends about an Item will be the "addDatastream descMetadata" message - which is what triggers the item indexing). Add a "full_text" field to the solr index - currently this is searchable but not stored, we will see if we need to change this as we add the Search facilities to the web-app.
Merge branch 'master' of github.com:IntersectAustralia/hcsvlab