Add full randomization for teaser set elements
meta_data: fix multiline string handling in show&edit, move detection logic into model
fix previous_id_redirect: remove binding.pry
controllers: set, entry: make sure `check_and_initialize_for_view` is done consistently

also fix an old-id-redirect
ui: implement new action bar for Entries and Sets
simpler login_action, move to top navigation
resources: actions menu: move up 'organize'
resources: actions menu: adressen without 'verwalten'
fixing tests

(also some real bugs)
Add export access for guests