Ease and improve TOC generation

Do not add another level of data processing.
Allow to hide content in TOC.
Ensure ordering of elements in TOC reflects ordering in rendering.

Configuration/PageTSconfig/Tceform/TtContent.tsconfig

@@ -34,9 +34,6 @@ TCEFORM.tt_content {
     space_after_class {
         disabled = 1
     }
-    sectionIndex {
-        disabled = 1
-    }
     linkToTop {
         disabled = 1
     }

Configuration/TypoScript/Setup/Page.typoscript

@@ -73,21 +73,12 @@ page {
                 orderBy = sorting
             }
 
-            50 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
+            50 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
             50 {
-                as = pageSections
-                special = list
-                special.value.data = page:uid
-                dataProcessing {
-                    10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
-                    10 {
-                        table = tt_content
-                        pidInList.field = uid
-                        as = content
-                        where = sectionIndex = 1 AND header_layout != 100
-                        orderBy = sorting
-                    }
-                }
+                table = tt_content
+                as = pageContent
+                where = sectionIndex = 1 AND header_layout != 100 and colPos != 50
+                orderBy = colPos, sorting
             }
 
             100 < .10

Resources/Private/Templates/Page/BlogPost.html

@@ -51,15 +51,13 @@
                 <li>
                     <a href="#introduction">Introduction</a>
                 </li>
-                <f:alias map="{contentSections: pageSections.0.content}">
-                    <f:for each="{contentSections}" as="contentEntry">
-                        <f:if condition="{contentEntry.data.header}">
-                            <li>
-                                <a href="#c{contentEntry.data.uid}">{contentEntry.data.header}</a>
-                            </li>
-                        </f:if>
-                    </f:for>
-                </f:alias>
+                <f:for each="{pageContent}" as="contentEntry">
+                    <f:if condition="{contentEntry.data.header}">
+                        <li>
+                            <a href="#c{contentEntry.data.uid}">{contentEntry.data.header}</a>
+                        </li>
+                    </f:if>
+                </f:for>
                 <f:if condition="{acknowledgements}">
                     <li>
                         <a href="#acknowledgements">Acknowledgements</a>

Resources/Private/Templates/Page/Full.html

@@ -18,7 +18,7 @@
         })}
 
         {f:render(section: 'TableOfContent', arguments: {
-            contentSections: pageSections.0.content
+            pageContent: pageContent
         })}
 
     </f:section>
@@ -42,7 +42,7 @@
         <nav>
             <h1>Table of Content</h1>
             <ol>
-                <f:for each="{contentSections}" as="contentEntry">
+                <f:for each="{pageContent}" as="contentEntry">
                     <f:if condition="{contentEntry.data.header}">
                         <li>
                             <a href="#c{contentEntry.data.uid}">{contentEntry.data.header}</a>