Force failed mappings below other unmapped OTUs.
Force failed mappings below other unmapped OTUs.

This should make it less frustrating for curators, as described in #809.
N.B. that this effect will not persist across sessions; clearing
(resetting) these mapping results will restore the "failed" OTUs to
their position among the other unmapped taxa.

OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree