Fixed capitalization on noticeidnotfound.jsp.
Fixed filter parsing so that blank filters don't cause exceptions when searching
for notifications. Partially fixes bug NMS-6042.
Changed some UI code over to use DaoWebNotificationRepository instead of
old JDBC NotificationModel. Removed unused methods from NotificationModel.
Added usersNotified information to the objects returned by
DaoWebNotificationRepository. This prevents blank information from being
displayed on the notice details page. Fixes bug NMS-6042.