ddrindex does not generate correct ES json template attribute for some A/V entities

[GeoffFroh]

When using ddrindex publish to push up some entities with audio/video content that is hosted externally at IA, the template attribute is not properly generated.

This is due to either empty or incorrect selection of mimetype data that is retrieved from IA by the archivedotorg module. See:

https://github.com/densho/ddr-cmdln/blob/master/ddr/DDR/archivedotorg.py#L137
https://github.com/densho/ddr-cmdln/blob/master/ddr/DDR/archivedotorg.py#L131

[GeoffFroh]

Root cause of denshoproject/ddr-public#123

[gjost]

Fixed in ddr-cmdln commit d4d23ae for package ddrlocal-master_2.8.5.