Quicksearch for countries

[szabozoltan69]

With the Django-haystack search the "old" 3-letter-wise search is already not working.
I mean this: 2a5a167 and this.
So recently there is no "quickly to the country from the search bar" way. If possible, let's put it back somehow.

There is some kind of length>2 in search, but no "else" branch:
https://github.com/IFRCGo/go-frontend/blob/develop/src/root/components/navbar.js#L185
The original ticket for the first solution was this.