fix(page): add version popover to breadcrumbs home

close #157

Author: duncdrum

src/main/xar-resources/modules/app.xql

@@ -5,6 +5,8 @@ module namespace app = "http://exist-db.org/apps/docs/app";
 import module namespace templates = "http://exist-db.org/xquery/templates";
 import module namespace config = "http://exist-db.org/xquery/apps/config" at "config.xqm";
 
+declare namespace expath = "http://expath.org/ns/pkg";
+
 declare function app:bread-nav($node as node(), $model as map(*)) as element(nav) {
     let $uri := tokenize(request:get-uri(), '/')[position() = last()]
     let $file :=
@@ -16,7 +18,7 @@ declare function app:bread-nav($node as node(), $model as map(*)) as element(nav
     return
     <nav aria-label="breadcrumb">
         <ol class="breadcrumb">
-            <li class="breadcrumb-item"><a href="documentation">Home</a></li>
+            <li class="breadcrumb-item"><a href="documentation" data-toggle="popover" title="Version: {data($config:expath-descriptor//@version)}">Home</a></li>
             <li class="breadcrumb-item"><a href="#">{$file}</a></li>
         </ol>
     </nav>