Add the ability to Reject an image from within the Imaging tab

[Ara Jerahian]

As completed exposures from a running sequence are downloaded and displayed, there are times when an image is obviously faulty due to wind, clouds, bumps, etc. It would be great to have the ability to Reject an image from the imaging tab when such a faulty exposure comes through. NINA would show a visible “Rejected” badge on the thumbnail and on the displayed image, as well as decrement the completed exposure count to accommodate for the rejected exposure.

[Ron Kramer]

+1 Other software does this. I also felt it would be at least nice to be able to right click on the image in image history and select “delete”. Though with a thumbs down click - the sequence could/should also decrease the number of subs by updated amount.

[Stefan B]

Duplicate of #150.