oops, put the version only in the front page

This is so we dont have to rsync all the files every time.

_includes/head.html

@@ -8,9 +8,4 @@
 
     <!-- Custom CSS -->
     <link rel="stylesheet" href="{{ "/css/main.css" | prepend: site.baseurl }}">
-
-    {% if site.data.version %}
-    <!-- site built from {{ site.data.version }} -->
-    {% endif %}
-
 </head>

index.md

@@ -2,6 +2,8 @@
 layout: default
 ---
 
+{% if site.data.version %}<!-- site built from {{ site.data.version }} -->{% endif %}
+
 <div><img src="images/screen_thumb.png" border="0"
   alt=" " width="350" height="250" style="float:right" /></div>
 Welcome to the home of **LinuxCNC**.