Initial stab at using CoreData to save upload information

Not very complete, but it saves to an sqlite file.
primitive records fetch
Redoing the UI -- work in progress

todo:
* save records on creation
* show records in table view
* put toolbar at bottom of screen
* show activity during upload
* error checking and all that
* implement debug switch
* add a detail view for setting description, cats
cleaner interface for preparing image...
Work in progress - INCOMPLETE
table cells working
saves files to disk now
live updates to table when adding entries
thumbnail creation
uploads working again sorta
multiple uploads!
clean up files when deleting items
Merge branch 'ui-redo'

* add CoreData storage of queue
* save files and thumbnails in documents area
* delete files and records when upload complete