Songkick: Start using a template group

The old template needs to be "wrapped" in other elements. It was working before because we automatically wrapped everything, but that didn't work so well. So now we have to explicitly wrap templates which is why we have template groups now.
Songkick: Added the URL in the object.

Also set detail to false.
Merge pull request #634 from duckduckgo/jag/bttf/songkick-group

Songkick: Start using a template group