hugolib: Enable nested sections

Fixes #465

hugolib/hugo_sites.go

@@ -337,6 +337,11 @@ func (h *HugoSites) createMissingPages() error {
 			}
 		}
 
+		// Will create content-less root sections.
+		newSections := s.assembleSections()
+		s.Pages = append(s.Pages, newSections...)
+		newPages = append(newPages, newSections...)
+
 		// taxonomy list and terms pages
 		taxonomies := s.Language.GetStringMapString("taxonomies")
 		if len(taxonomies) > 0 {
@@ -384,33 +389,6 @@ func (h *HugoSites) createMissingPages() error {
 				}
 			}
 		}
-
-		if s.isEnabled(KindSection) {
-			sectionPages := s.findPagesByKind(KindSection)
-			if len(sectionPages) < len(s.Sections) {
-				for name, section := range s.Sections {
-					// A section may be created for the root content folder if a
-					// content file is placed there.
-					// We cannot create a section node for that, because
-					// that would overwrite the home page.
-					if name == "" {
-						continue
-					}
-					foundSection := false
-					for _, sectionPage := range sectionPages {
-						if sectionPage.sections[0] == name {
-							foundSection = true
-							break
-						}
-					}
-					if !foundSection {
-						n := s.newSectionPage(name, section)
-						s.Pages = append(s.Pages, n)
-						newPages = append(newPages, n)
-					}
-				}
-			}
-		}
 	}
 
 	if len(newPages) > 0 {