[Optimisation] Removing a photo from a group leads to redoing feature extraction

[Baasje85]

When multiple photos are removed from an existing group, the entire list of images is again processed. This seems to be unnecessary. It is likely to be caused due to the uuid change of the image list. Wouldn't it be smart to have a global feature cache instead of a node cache for the feature extraction step? This would also help multi project experiments.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.