Implement WP:PIQA (project independent quality assessments in banner shells)

[NovemLinguae]

https://en.wikipedia.org/wiki/Template:WikiProject_banner_shell/doc#Project-independent_quality_assessments

If a reviewer accepts an article and picks something such as class=start for it, this should be placed in the banner shell instead of in the individual WikiProject templates.

Good:

{{WikiProject banner shell |class=start |
{{WikiProject Tree of Life |importance=High}}
{{WikiProject Protista |importance=High}}
{{WikiProject Microbiology |importance=Mid}}
}}

Bad:

{{WikiProject banner shell|
{{WikiProject Tree of Life |class=start |importance=High}}
{{WikiProject Protista |class=start |importance=High}}
{{WikiProject Microbiology |class=start |importance=Mid}}
}}

[primefac]

I vaguely recall that AFCH doesn't add the WPBS...

[TechnoSquirrel69]

Note also that Military history needs to be specifically excluded; its banner should probably be left with an empty |class= parameter by default.

[NovemLinguae]

Mentioned at https://en.wikipedia.org/wiki/Wikipedia_talk:WikiProject_Articles_for_creation#Assigning_WikiProjects_to_Articles