Accept include_from_page_type config

[lilireece]

In my case, I want to apply this module on one page type only. But there are many page types in my code base. I do not want to list them one by one in the exclude_from_page_type setting. So I added the include_from_page_type to make it flexible in different situations.

[scott1702]

@lilireece Care to rebase? :)

[sheadawson]

@lilireece Sorry for the late response on this one. This would be a great addition to the module. I wonder if we could change the language slightly though as include_from_page_types doesn't sound quite right. Would you mind changing it to restrict_to_page_types? Or if anyone has any better suggestions let me know.

Ideally I think pagetype_whitelist and pagetype_blacklist would be the most clear and consistent. Maybe we could change to this while keeping backwards compatibility for exclude_from_page_types?

[lilireece]

@sheadawson No worries. As long as we can use include page types, it would be convenient for those people with lots of page types.

[sheadawson]

Thanks guys, I've taken what you've done and implemented config options for pagetype_blacklist, pagetype_whitelist and legacy support for exclude_from_page_types