Remove old inputrow directive.

Moved this to the server-side.  Doing it through Angular was kinda
clunky, causing DOM manipulations to be visible on load.
Switch to login bad, not individual data bad.

Instead of validating either the username or password, validate both
as a unit.  This makes it harder to verify that you have a good
username (limits external data mining).

Add "clear-other" attribute in support of this.