issue-#13

add ability to customize continue text and subtext for
internationalization
issue-#13

add ability to hide continue button, just in case we want the controls
on the screen to trigger next.
issue-#13

add autofocus logic for next and previous fields
issue-#13

add css transparency to inputs background.
issue-#13

add complete, busy, back and next logic to the form.
Merge branch 'issue-#13' into development