Web translator priorities

A small revision to translator priorities (sort of regarding https://forums.zotero.org/discussion/39589/error-with-annualreviewsorg/). From the commit message:
>* 100 = specific journal/website (target should be a specific domain)
>* 150 = multi-journal sites with different subdomains, but all journals would look practically the same
>* 200 = multi-journal sites with different subdomains and some journals may have somewhat different layout
>* 250 = CMS/Library Catalog with no specific domain, but either a very unique URL or unique checks in detectWeb (for all possible detection options). I.e. unlikely to be a false-positive
>* 260 = CMS/Library Catalog with no specific domain, but somewhat unique detectWeb checks (mostly URL-based checks).
>* 270 = CMS/Library Catalog with no specific domain and rather generic URL checks (conceivably, could be a false-positive)
>* 300+ = Translators to be run on every page in order of metadata quality

Maybe we can spread 260 and 270 a bit more apart.

I'm also thinking that maybe we should rename some of these CMS translators with a CMS prefix for clarity. E.g. "CMS (Atypon)"

Thoughts?