rename bird_of_paradise -> bird_of_paradise_flower

BUR #11129 has been approved by @nonamethanks.

rename bird_of_paradise -> bird_of_paradise_flower
create alias bird_of_paradise_(bird) -> bird-of-paradise

Really confusing tag names.

BUR #11137 has been approved by @nonamethanks.

create alias strelitzia_(flower) -> bird_of_paradise_flower

Throwing in this utility alias too.

The bulk update request #11129 (forum #216359) has been approved by @nonamethanks.

The bulk update request #11137 (forum #216375) has been approved by @nonamethanks.