Can now save up to 3 pictures (can have more by changing
MAX_NUMBER_OF_PHOTOS in AddFragment). Will save the file paths in one
long string broken up by commas. When an image is removed from Update...
it is deleted. Also, temp files do not persist after submitting the
record. Bitmaps are loaded on background thread and consume far less
memory so no more crashing hopefully.

Need to neaten up Information page, test reminders more - I feel they
are a not quite ready. 

Signed-off-by: Charlie <chaz2505@hotmail.com>