Branding: add missing cosmetic newline

Add missing cosmetic \n in messages-branding.properties
Branding: Email templates: move text into messages

Move explicit references to AAF and AAF support from GSP email templates
(email.gsp and workflow email templates) into
messages-branding.properties
Branding: extract branding from login error pages

Extract AAF specific text (federation name, support link) from login
error pages (federatederror.gsp, federatedincomplete.gsp) into
messages-branding.properties