bump crengine: alternative TOC, no page break on borders (#4011)

Includes:
- Avoid page break between a node and its borders
- Allow building an alternative TOC from document headings

On CRE documents, allows toggling between original TOC and an
alternative TOC with long-press on the "Table of content" menu
item.

Also update the Wikipedia stylesheet to further avoid
page-breaks between images and their caption, so a full
bordered wikipedia thumbnail is always full on a single page.

frontend/document/credocument.lua

@@ -611,6 +611,18 @@ function CreDocument:getCacheFilePath()
     return self._document:getCacheFilePath()
 end
 
+function CreDocument:canHaveAlternativeToc()
+    return true
+end
+
+function CreDocument:isTocAlternativeToc()
+    return self._document:isTocAlternativeToc()
+end
+
+function CreDocument:buildAlternativeToc()
+    self._document:buildAlternativeToc()
+end
+
 function CreDocument:register(registry)
     registry:addProvider("azw", "application/vnd.amazon.mobi8-ebook", self, 90)
     registry:addProvider("chm", "application/vnd.ms-htmlhelp", self, 90)