Modified how the #lostpassword or #email fields save email addresses on the Personal settings page. It now saves one second after the last keyup event, instead of after a blur event.

This patch fixes a bug that can be reproduced in following way:

1. change displayName
2. clear text in displayName input click change again

Then you will get an error and previous displayName will be restored.

Expected behavior should restore the new updated displayName.

Fixes: http://bugs.owncloud.org/thebuggenie/owncloud/issues/oc-303