Added add new activity functionality.

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

	modified:   AndroidManifest.xml
	new file:   res/layout/activity_add_new.xml
	new file:   res/menu/add_new.xml
	modified:   res/menu/bird_form.xml
	modified:   res/values/strings.xml
	new file:   src/com/catalyst/android/birdapp/AddNewActivity.java
	modified:   src/com/catalyst/android/birdapp/BirdFormActivity.java
	modified:   src/com/catalyst/android/birdapp/database/DatabaseHandler.java