SW-8839
Fix filename in demodata
Merge pull request #1482 in SW/shopware from bugfix/master/sw-8839-error-in-demodata to master

* commit 'ad47511bc613750035f7e213c77ba9886b246a57':
  SW-8839 Fix filename in demodata
SW-9126 - newsletter id incrementation fixed
Merge pull request #1530 in SW/shopware from bugfix/master/sw-9126-newsletter-id-increments-after-every-update to master

* commit '1c649e78829305eb092cc082536fc1668f53ad89':
  SW-9126 - newsletter id incrementation fixed