Merge branch 'master' of https://github.com/piwik/piwik

lang/am.php

lang/ar.php

lang/be.php

lang/bg.php

lang/ca.php

lang/cs.php

lang/cy.php

lang/da.php

lang/de.php

lang/el.php

lang/es.php

lang/et.php

lang/eu.php

lang/fa.php

lang/fi.php

lang/fr.php

lang/gl.php

lang/he.php

lang/hr.php

lang/hu.php