adress update - #85

Changed pages include:

• index.html - view
• 404.html - view
• angebote/index.html - view
• authors/index.html - view
• blog/index.html - view
• datenschutz/index.html - view
• en/index.html - view
• events-archive/index.html - view
• events/index.html - view
• impressum/index.html - view

There are more changes not included in the list