Replace css class 'notice' that is used in User profile template field help text with new 'fieldhelptext' class. Notice is part of CSS for notification bar and we want width limit just for field help text not for notification bar text.
Patch by: Pawel Solyga
Review by: to-be-reviewed
Add getSingleton() method to return the Site settings entity.
There is always only one Site entity, referred to by DEF_SITE_LINK_ID.
Patch by: Todd Larsen
Review by: to-be-reviewed