Tag de-alias: sleeveless_sweater -> vest

sleeveless_sweater is currently being aliased to vest, which to me seems kinda wrong. Not all vests are sweaters, as you can see in post #1267789 and post #1267279, and for that we have the tag sweater_vest.

While we're at it, sleeveless_sweater should be aliased to sweater_vest.

Agreed. sleeveless_sweater should definitely be aliased to sweater_vest and not vest.

I think this might follow the British meaning of vest, but I agree, it's not consistent with the usage defined here. +1 for the re-aliasing.

FIxed alias to sweater_vest