internal: Be more forgiving about building `Taxonomy` objects. Add `setting_name`. The setting name of a taxonomy is whatever name is used to assign terms of that taxonomy to a page. If the taxonomy is "multiple", this is the name of the taxonomy. If not, it's the term name (a singular name).

[pytest]
norecursedirs = .* _darcs CVS .svn .git .hg *.egg-info dist build node_modules venv tmp* {args}