Imply long/dyed bangs -> bangs

BUR #9244 has been approved by @nonamethanks.

create implication long_bangs -> bangs
create implication dyed_bangs -> bangs

Immediate logic.

There are 704 posts in long_bangs -bangs (that's half of all long_bangs) so taggers seem to assume an implication.

It would be helpful if the people who voted neutral on this could explain what they're thinking.

The bulk update request #9244 (forum #207478) has been approved by @nonamethanks.