Mixin for attachments
requested to merge feature-restructure-frontend-page-mixins into feature-restructure-frontend-platforms
Goal of this MR:
- put functionality that is used in the devices-page as well as in the platforms page into a mixin
Note: currently I've just created a mixin for the attachments page and only for functions and not methods, as the methods rely too heavily on some internals of the page component itself.