userportal: adding user message of the day

This patch adds the user message of the day functionality in the user
portal login page

Change-Id: I020c4772388ac5ebc2b6391ad3b0e1eef0081309
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=983120
Signed-off-by: Oved Ourfali <oourfali@redhat.com>