fix: genericize example banner message feed
fix: genericize example banner message feed

Make not-MyUW-specific.
thevoiceofzeke/uw-frame,uPortal-Project/uportal-app-framework,uPortal-Project/uportal-app-framework,UW-Madison-DoIT/uw-frame,thevoiceofzeke/uw-frame,paulerickson/uw-frame,thevoiceofzeke/uw-frame,uPortal-Project/uportal-app-framework,paulerickson/uw-frame,paulerickson/uw-frame,UW-Madison-DoIT/uw-frame,UW-Madison-DoIT/uw-frame