Added Toast mode to settings.
Extended preference loading to load toast prefs. Moved outside handleLoadPackage block. Implemented toast setting functionality.
Implemented full settings funcitonality

Added the dialog that asks whether to save the media. In case saving mode is set to SAVE_AUTO, the image will still always be saved upon opening, but if the user chooses "Dismiss" at the dialog, we silently delete the file. Only if the user chooses to save, or enter the settings, do we actually show the toast (if enabled) that the media was saved and call the media scanner.
version bump to 2.0_rc1 and increased targetSdk to 18.