Make drag&drop move an asset from slot to slot. Don't remove ".content input" on move, but set it empty. This ensures that we can drag an asset to a slot we draged an asset out of.
Make drag&drop move an asset from slot to slot.
Don't remove ".content input" on move, but set it empty. This ensures that we can
drag an asset to a slot we draged an asset out of.

fassets/fassets_resources,fassets/fassets_presentations,RAllner/fassets_core,fassets/fassets_resources,RAllner/fassets_core,fassets/fassets_presentations