Made it so that users cannot CREATE pages if those pages are blocked by LyricFind. Additionally, users will not be allowed to see the edit-page if the song is blocked.  For maintenance reasons (preventing spam/vandalism and fixing existing categorizations, etc.) both staff and sysops will be able to see the edit page (but still they can NOT create a page).
Merge pull request #2895 from Wikia/lw-lf-prevent-creation

Made it so that users cannot CREATE pages if those pages are blocked by ...