Refactorings and gui improvements

app/views/reports/_page_nav.html.slim

@@ -0,0 +1,26 @@
+div id=dom_id(report, :page_nav)
+  - if report.pages.any?
+    details open=true 
+      summary Struktur
+      nav
+        ul
+          - report.pages.each do |page|
+            - is_current = current_page == page
+            li
+              details open=current_page_displayed(page) class=""
+                summary
+                  i.bi.me-1 class="bi-file-earmark-check#{is_current ? "-fill" : "" }"
+                  - if is_current
+                    =< "#{page.position} #{page.path}" 
+                  - else
+                    =< link_to("#{page.position} #{page.path}", report_path(report, page_id: page.id), class: "#{is_current ? " active text-decoration-underline" : nil  }", data: { "turbo-frame": :_top })
+                ul id=dom_id(page, :page_nav_elements)
+                  - page.elements.each do |element| 
+                    li 
+                      i.bi.bi-boxes.me-1
+                      - if current_page == page
+                        =< link_to("#{element.number} #{element.title}", "##{dom_id(element)}", data: { "turbo": false })
+                      - else 
+                        =< link_to("#{element.number} #{element.title}", report_path(report, page_id: page.id, anchor: dom_id(element)), data: { "turbo": false })
+  = turbo_frame_tag "new_page_frame" do
+    = render partial: "reports/new_page_button", locals: { report: report }