Merge branch 'master' of git.ozg-sh.de:mgm/goofy

goofy-client/libs/ozg-file-shared/src/lib/ozg-file.model.ts

goofy-client/libs/ozg-file-shared/test/ozg-file.ts

...c/lib/ozg-file-container/ozg-file/ozg-file.component.html

...src/lib/ozg-file-container/ozg-file/ozg-file.component.ts

...attachments/postfach-nachricht-attachments.component.html

...attachments/postfach-nachricht-attachments.component.scss

...ach-page-mail-list/postfach-page-mail-list.component.scss