docs: reorganize sidebar, prev/next at top

docs/conf.py

@@ -134,7 +134,7 @@ html_static_path = []
 # Custom sidebar templates, maps document names to template names.
 html_sidebars = {
     'index': ['sidebarlogo.html', 'sidebarusefullinks.html', 'searchbox.html'],
-    '**': ['sidebarlogo.html', 'localtoc.html', 'relations.html', 'sidebarusefullinks.html', 'searchbox.html']
+    '**': ['sidebarlogo.html', 'relations.html', 'searchbox.html', 'localtoc.html', 'sidebarusefullinks.html']
 }
 # Additional templates that should be rendered to pages, maps page names to
 # template names.