[APPROVED] [bulk] Tag implication: single_thing -> things

create implication single_shoe -> shoes
create implication single_boot -> boots
create implication single_sandal -> sandals
create implication single_head_wing -> head_wings

Link to request

We already implicate single_<thing> -> <things> for most other tags. This practice was reaffirmed in topic #12691.

EDIT: removed single hair intake -> hair intakes.

The bulk update request #1243 has been approved.

Single hair intake is a completely different hairstyle to hair intakes, in the same way that one side up is a completely different hairstyle to two side up.

The bulk update request #1243 has been approved.