Update SMO descriptions, site_name and locale

Related to #1513

 - Update descriptions
 - Update site_names
 - Update locale

Tests possible on http://smo.knowem.com/ using http://mf-geoadmin3.dev.bgdi.ch/ltpoa/ as url
Is this character encoding really needed? What is the effect if you don't? As german (and french) special characters are part of utf-8, it should not be needed if the file is encoded in utf-8 and if the browser interprets it as such.