ignoresets: add some XenForo ignores

[Pokechu22]

/share is a "Share this post" page that contains no useful information (e.g. https://www.emutalk.net/posts/134368/share and https://www.emutalk.net/posts/123040/share). /page-%page% is from a data attribute used for a page selector, but there's also a regular page selector that uses normal links so it can just be ignored. /poll/vote is the (POST) action on a form tag (and can't be used without an account).