Separate friend and non-friend content in search

[jb55]

When searching, we should make it clear which results are from your friends and what are not. Searching content from your friends is likely most useful for local search, but you may have global results from your friends, but the user will not likely care about distinguishing where it came from in those cases.

In

• Unify search #2208

We describe a method for explicitly triggering a global search for privacy reasons, so that is something to keep in mind when implementing this.

Suggested-by: @danieldaquino