Search for a common root up to the scene root node if necessary, if there seem to be multiple skeleton roots. Allow saving animations also when no geometry. To improve animation save in that case, prepend the output filename to animation filename in any case. Closes #1221.
Search for a common root up to the scene root node if necessary, if there seem to be multiple skeleton roots. Allow saving animations also when no geometry. To improve animation save in that case, prepend the output filename to animation filename in any case. Closes #1221.

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