GPS implementation with an AlertDialog, send information through email intent, various bug fixes

Daniel and I have added an AlertDialog to prompt the user to turn on GPS if it's turned off. We also fixed the picture path when the picture was taken from the camera. Previously, it was getting the very first picture. We also added an ImageView to view the picture on FormActivity and we implemented the sendEmail method. We wanted to push this up first before moving on to other things so you could take a look at what we have so far.