Put the language selector for search into the settings menu

[jucktnich]

Current behaviour

If you want to change the language of the search bar you need to search for something and then click on the cogwheel.

Expected behaviour

Let the language be changed in the settings menu

[hugolabe]

In version 2 the search bar will always be visible and will be enough to click on the drop-down menu to choose the language. You can see it here: #99