Aliasing no_music -> invalid_tag.

Reason: In accordance with tagging what IS there. Though this one only exists on one post... should we just remove the tag?

While we're on this subject, I'm too lazy to check... do we have aliases for the more common no_* tags?

Done, and I'm sure there are a few no_* tags out there

*checks own link*

yikes! Guess I'm going to have to comb through and find the troll tags