Design changed to vier

I changed the design here on this #Friendica node to #Vier which looks like lesser complicated and more modern. I also have surpressed language meta informations to keep the WUI as simple as possible but still powerful (see #bbcode support).

Currently, only my wife @dianalace and me are here. I have not opened registration due to #spam accounts (which have signed up only #GNUSocial instance a lot until I closed registration there, too).