Moved the getLanguage call after the auth is completed. LanguageManagers need the language code after authentication, in the case the language was stored in the user preference table. Otherwise, there would be a bug where the language that was in my preference show up in the language selector as "selected" but all the content was in english.

git-svn-id: http://dev.piwik.org/svn/trunk@2035 59fd770c-687e-43c8-a1e3-f5a4ff64c105