node to page: Remove Node

And misc. TODO-fixes

Updates #2297

hugolib/taxonomy.go

@@ -14,6 +14,7 @@
 package hugolib
 
 import (
+	"fmt"
 	"sort"
 
 	"github.com/spf13/hugo/helpers"
@@ -23,6 +24,10 @@ import (
 // e.g. List['tags'] => TagTaxonomy (from above)
 type TaxonomyList map[string]Taxonomy
 
+func (tl TaxonomyList) String() string {
+	return fmt.Sprintf("TaxonomyList(%d)", len(tl))
+}
+
 // A Taxonomy is a map of keywords to a list of pages.
 // For example
 //    TagTaxonomy['technology'] = WeightedPages
@@ -39,6 +44,10 @@ type WeightedPage struct {
 	Page   *Page
 }
 
+func (w WeightedPage) String() string {
+	return fmt.Sprintf("WeightedPage(%d,%q)", w.Weight, w.Page.Title)
+}
+
 // OrderedTaxonomy is another representation of an Taxonomy using an array rather than a map.
 // Important because you can't order a map.
 type OrderedTaxonomy []OrderedTaxonomyEntry