Image Preview dialog: initial position

[ALeXceL]

When we click on the "Image Preview" button, the corresponding dialog allways is shown on the left of the screen. Would be a nice modification to show it on the right of the screen, in order to maintain most of the listed data visible to the user. Also, would be a good improvement, to mantain this dialog open after a file deletion process because, in most of cases we will call it again to continue our job.

[DigitalVolcano]

The Image Preview window should remember its position and size - this should be saved between sessions.

Update: I've just checked and it doesn't remember the position if you close it by clicking on the 'Image Preview' button again. Workaround - position it where you want and close it using the X on the window. That way the location is saved.