Deilbhín Attachment Viewer: view in a tab, slideshow

Attachment Viewer: view in a tab, slideshow 2.8.2

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View attachments in TB
Images, office files, mp3, mp4
Use Dropbox viewer for 175 file types (in v3)
* Docx, xlsx, pptx, pdf preview
* Slideshow of images
* Zoom/drag to position
* Rotate/flip image
* Download dialog with thumbnail of image