Feature request: set owncloud collaborative tags from fullscreen preview

[aromicreativi]

Owncloud 9.0 and above has "collaborative tags" for files, that would be useful for image classification too.

The file name / path is meaningful of the content for general files, since it's chosen by the author.
However, pictures file names are usually progressively defined by the camera and therefore almost meaningless.

We need the gallery app to properly display the content. This means that the natural interface to tag image files with the "collaborative tags" feature is the gallery app itself, since you can't have a decent image preview other ways in the browser.

Another additional feature would be to add this feature to the sync clients (the same as: right click > share with owncloud). I'll post this feature request here for sync clients too.

[PVince81]

To make this work best would be to have a reusable sidebar in which case clicking on an image would open the sidebar and allow all possible actions like tagging, sharing, etc.

There is one idea here to consolidate the gallery's thumbnail view with the files app which would indirectly bring the sidebar: #727