Added refresh button for coordinates, added two buttons styles for coordinates.

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

	new file:   res/drawable-hdpi/coordinate_button_green.xml
	new file:   res/drawable-hdpi/coordinate_button_red.xml
	modified:   res/layout/activity_bird_form.xml
	modified:   res/values/strings.xml
	modified:   res/values/styles.xml