complete meta data of news websites in refs; cope with link-templates

see https://de.wikipedia.org/wiki/user_talk:lustiger_seth#Weitere_Medien

• get current ref-content of a page
• decompose template (such as Internetquelle or webarchiv), keep order and whitespace
• fetch meta data from external website
• if there is new informaten: add parameters to template
• replace old template with improved one