Issue 3961 taglinks collections

Get rid of links to ao3.org/collections/COLLECTIONNAME/tags/TAGNAME/works
https://code.google.com/p/otwarchive/issues/detail?id=3961

I changed the order of the paths definition because the more general one was eating the more specific one. (I had to test that the old functionality worked in a feature, before breaking it. >.>)