Redo everything in the MR

src/App.scss

src/assets/nsfw.png

src/components/attachment/attachment.js

src/components/attachment/attachment.vue

src/components/gallery/gallery.js

src/components/gallery/gallery.vue

src/components/media_modal/media_modal.js

src/components/media_modal/media_modal.vue

src/components/registration/registration.vue

src/components/settings/settings.js

src/components/settings/settings.vue

src/components/status/status.js

src/components/status/status.vue

src/components/video_attachment/video_attachment.js

src/components/video_attachment/video_attachment.vue

src/i18n/en.json

src/i18n/fi.json

src/services/file_type/file_type.service.js

test/unit/specs/services/file_type/file_type.spec.js