rename mousse -> mousse_(ranma_1/2)

BUR #6707 has been approved by @nonamethanks.

rename mousse -> mousse_(ranma_1/2)
rename mousse_(duck) -> mousse_(ranma_1/2)_(duck)

Ambiguous. There are a few other characters and a food named "mousse".

The bulk update request #6707 (forum #194148) has been approved by @nonamethanks.

BUR #6708 has been approved by @nonamethanks.

rename mousse_(ranma_1/2)_(duck) -> mousse_(duck)_(ranma_1/2)

Wait, the qualifier should be last.

The bulk update request #6708 (forum #194150) has been approved by @nonamethanks.