Hi kouliga
That file head.php has nothing to do with positions
Your template has no topbar positions at default installation
I added indeed a new file.php named topbar.php and modified your home.php to include such block
Now you have a topbar block above header and you have 2 new positions available
topbar-left and topbar-right
I published the languageswitcher module in topbar-right position and it is working as you wish now
If you want to add a new module there then use the topbar-left position
Regards