KS-4758: FAQ portlet doesn't take into account the available languages

Problem analysis:
* FAQ portlet displays always the questions with the default language you created them. Changing language doesn't has any effect on it.

Fix description:
* Get the question and its answers with the current language if there is already a translation for it using this method getQuestionLanguageByLanguage(questionpath, language), otherwise, it will use the one created with the default language.