don't rename index.html to indexpage.html in coqdocjs target

scripts/coqdocjs/Makefile.coqdocjs

@@ -6,4 +6,4 @@ htmlpretty: $(GLOBFILES) $(VFILES)
 		--with-header scripts/coqdocjs/header.html --with-footer scripts/coqdocjs/footer.html \
 		-html $(GAL) $(COQDOCLIBS) -d html $(VFILES)
 	$(HIDE)cp scripts/coqdocjs/resources/* html
-	$(HIDE)mv html/index.html html/indexpage.html
+

scripts/coqdocjs/header.html

@@ -18,8 +18,8 @@
     <span class="button" id="toggle-proofs"></span>
 
     <span class="right">
-      <a href="../">Project Page</a>
-      <a href="./indexpage.html"> Index </a>
+      <a href="../../">Project Page</a>
+      <a href="./index.html"> Index </a>
       <a href="./toc.html"> Table of Contents </a>
     </span>
 </div>

scripts/coqdocjs/resources/coqdocjs.js

@@ -169,7 +169,7 @@ function fixTitle(){
   var url = "/" + window.location.pathname;
   var basename = url.substring(url.lastIndexOf('/')+1, url.lastIndexOf('.'));
   if (basename === "toc") {document.title = "Table of Contents";}
-  else if (basename === "indexpage") {document.title = "Index";}
+  else if (basename === "index") {document.title = "Index";}
   else {document.title = basename;}
 }