Add add recipient button to contextual action bar in recipient fragment.
Add addRecipient method to handle clicks on the add recipient action bar
button.
Add undo function for removing an added recipient.
Validates number being added and colors number appropriately.
Merge branch 'feature-add_recipient' into develop
Incorporate phone number validation (from adding a recipient) into
editing a phone number.
Update version notes.
Bump version number to 1.0.4
Use version from manifest for display in about dialog.
Merge branch 'release-1.0.4' into develop