Changed lat and long fields to plain text field so that they accept decimals and negatives.
Added date(DD/MM/YYYY) and time(HH:MM) fields to bird sighting form.

Signed-off-by: Hannah <hyoung20@gmail.com>

	modified:   res/layout/activity_bird_form.xml
	modified:   res/values/strings.xml
	modified:   src/com/catalyst/android/birdapp/BirdFormActivity.java