Breadcrumb in issue Queue

Note that in some cases, the breadcrumb on the current d.o. site is broken, see #361971: Issue wonkiness after project deletion.

This patch fixes the breadcrumbs on project issues and advanced search. Statistics was completely broken, and is fixed too. Depends on #371535: Handle loading projects by name.

Thanks for getting this started.

a) We should use project_issue_set_breadcrumb() here.

b) You're missing some of the default issue-related views.

c) I'd rather not hard-code it like this, but make it an option of the issue table display plugin. This part could wait until post upgrade, but should be fixed before 6.x-1.0.

a) project_issue_set_breadcrumb() wants a $node in addition to $project. What would the $node be on a view?

b) Do you have a list of views or URLs? I was looking at the page reported here & neighbors.

c) Yes, it can wait #371606: Make issue view breadcrumbs configurable.

Upon closer inspection, this is mostly all we needed. Reviewed, testing, and committed to HEAD (with some minor doc cleanup).