Updated filters in narrowing down search
In lighttable when we choose to narrow down a search all subsequent filters should contain only the values present in the currently selected image set.
For example if i choose a film roll and then narrow down search, if i then choose the iso filter the possible values should be only those in the selected roll. If after that i narrow search again and choose aperture only aperture values of the roll with the selected iso should be presented. And so on and so on.