Farseed

Fixed a but fix that was effecting some users. When trying to upload a picture directly from the camera some people got an error. This should be fixed now and everyone should be able to take pictures and directly upload.
Added some polish to the history list. Thumbnail images and expanded product descriptions are now visible for UPC, EAN, ISBN lookups.
Other back end polish. Some improvements were made in various places to be more memory effecient. A couple routines that could run a little long have been moved to the background to keep the user interface moving quickly and prevent the app from exiting needlesly.

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