Configuration script for projects to define the maximum resolution for images

[mrivoal]

I create this issue as a reminder of a discussion with @lrosenth a few weeks ago.

Some project will need to define the maximum resolution allowed for their publicly available images. Due to some restrictions, some projects are allowed to display images : their resolution should be good enough for the unknown user to view but not good enough to make further image processing treatments interesting for this user.

@lrosenth talked about a configuration script for Sipi per project. That would imply to create a new property in Knora to deal with this file in (I guess) admin data. So, I am going to double up the issue in Knora repository.

[thomashaensli]

We can contribute a similar use case for our stand-alone Sipi application currently in discussion with @lrosenth:

• per-project limitation of max resolution for unauthenticated users
• per-project limitation to watermark-only for unauthenticated users

Let us know, if we can contribute anything to this feature!