bootic: initial port to bttf.
bootic: ported to BTTF.
bootic.js: removed the old code
bootic.js: Fixed the `itemType`
bootic.js: removed the string "Bootic".
bootic.js: add `rating: "Unrated"` to disable the rating stars.
Merge pull request #563 from duckduckgo/jag/bttf/bootic

Bootic: Port to BTTF