debug bar wont' show in release mode.  updated model filter intro bg

Signed-off-by: Chris Jones <chris@jonezy.org>
fixed blue bar showing and model variant links

Signed-off-by: Chris Jones <chris@jonezy.org>
special offer banner images

Signed-off-by: Chris Jones <chris@jonezy.org>
Merge pull request #309 from jonezy/master

special offer banners, debug bar behaves correctly + fixed model filter intro image.