* Make {section, page}.path always start with a slash
Change tests accordingly
* Fix missing leading/trailing slash in current_path of Taxonomy ("tags") and TaxonomyItem ("some-tag")
* Make {Paginator, Pager}.path always start with a slash
Fix Paginator.path missing trailing slash in from_taxonomy()
Change tests accordingly
* Update documentation regarding current_path now always starting with a slash
* Fix asymptomatic inverted logic in filter() for {section, page}.assets
* Add to 3 integration tests several checks for current_path in different templates
* Add a check for current_path in a paginated index section, "/page/2/"
This requires adding two dummy pages in the content root.
* Fix false passing of test on paginator.last due to URL prefix matching
A string formatting such as {name: value} can help prevent this.
