Implement Search of available friends

[timea-solid]

In the new design we have a Search feature of available friends.
At this stage I am not sure if this feature is feasible. If we need to load every person's profile to have their name to be able to search, maybe it is to much, if we already do it, than it is fine.

We have a similar feature in contacts-pane. We can draw inspiration form there for this feature.

[SharonStrats]

If we just need the name I think it's possible we do it here. Just double check though to be sure.