Add Livefyre to list of apps

Livefyre is a comment system that has fairly large following; added typical variable (fyre) as "html"; added included script embed as "script"
Merge commit '4702f5eb8f36a80bfea0ff8018efaa37660856d6'
add IntenseDebate (icon, apps.json) (not 100% if I'm doing this inline with your standards tho)