Make width of list admin adjustable
Lower width of list in Editable Items
Bugfix class for ResponsiveEl
Add useHistoryState-plugin to plugins. (not only create)
Try to load item if not existent
Improve saluation_polite when there is no gender
Revert "Try to load item if not existent"

This reverts commit 7885e21277360abc34165b358fa7b597a50fa6e6.
optimized _getRecipient for newsletter preview, only getRecipients from the newsletter choosen

if no one found a exception client will be thrown (helptext)
Correction on ResponsiveEl Class