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
Disable AutoLayout so we work on iOS 5.x

Had to fiddle with old-style "auto resize masks" to get settings dialog working right, it was stretching out fields and putting the navbar at the bottom.

From original patch by sohan - https://github.com/sohanmaheshwar/Commons-iOS/commit/4691d977a277bfe44c4da360ee875296ca4859df
Use asset library to fetch gallery images

Means we get full EXIF data etc. :D

Based on original patch by sohan: https://github.com/sohanmaheshwar/Commons-iOS/commit/3ae1bffe159a5518359e33a962d0e7c81d73607a
Use threadsafe singleton code.
adjust cell layouts
Merge pull request #2 from Rolken/master

Use threadsafe singleton code
update README, add CREDITS, add COPYING (gplv2)
fix toolbar positioning

Toolbar was appearing in the tableview's scrollbar.
Switching to enabling the nav controller's toolbar made this easier.

Per recommendation on http://stackoverflow.com/questions/5958956/how-to-add-a-uitoolbar-to-a-uitableviewcontroller-programmatically