Aliasing traditional -> traditional_media.

Reason: traditional_media is more descriptive, and covers everything from paints to pencils, clay to sculpture, and everything in between.

Even though it's more or less used akin to traditional_media rather than, say, for tagging depictions of traditional culture/practices, the traditional tag sounds pretty ambiguous, especially considering it would be aliased

However, if the current tag population for traditional_media is anything to go by, there'd be significantly more correctly-aliased tags, rather than ones used for a different context

If we're not going to alias it, then at least the tag needs to be cleaned up as it's mostly being used to tag for non-digital art right now.

I'm currently working on that right now. Not really sure what we'd use traditional for, as it's sort of nebulous. traditional_clothing, and traditional_* tags might be a better idea. For now though, it seems that people are determined to use it for traditional_media.

Alright, everything that's still tagged traditional is using the tag to denote the use of traditional medias, so if we want to alias traditional-> traditional_media, it's clear to do so.