removed readme.md, fixes #72
update composer file
update readme.txt
Update admin.css
Update changelog
Update main plugin file
Update uninstaller
Update German translation
update js
Update class Multilingual_Press
update autoload files
Implement content relations as separate table
Add support for nav menus
Add support for term translation
Add support for head meta elements. Fixes #75
Move files to new directory structure. Sorry for this commit!