added newline character after the delete message.

This is needed to separate two delete message sentences triggered by different hook
services. The messages are shown in the case that a standard user account _and_ also
the associated OpenID/s is/are deleted.

Bumped to version 1.7.2 20130611

Change-Id: I1eb371d4d1898d782e4d2c75e083824bbf148e10