Added a way to avoid Out of memory exceptions in Util and to include an
asynctask to deal with bitmaps. Tested adding 3 pictures (can be any
numebr specified by client) with delete buttons next to them. 

Need to add these features to AddFragment. When submit is pressed with 2
or more photos, the names are saved as BlahBlahBlah_1.jpg and
BlahBlahBlah_2.jpg and then stored in the picture_path column of the
table as BlahBlahBlah_1.jpg,BlahBlahBlah_2.jpg - ie with commas
separating. Therefore need to ensure no commas in the saved files. Need
to make sure this then gets parsed back correctly in Udpate fragments
into separate Uri