fixes learn jquery#43, add feedback link to github page for content

themes/jquery/functions.jquery.php

@@ -96,4 +96,22 @@ function jq_page_links_for_category( $category ) {
 	return $ret;
 }
 
+function jq_get_github_url() {
+    $url = $_SERVER['REQUEST_URI'];
+    $path = parse_url($url)['path'];
+    $github_prefix = 'https://github.com/jquery/'.get_stylesheet().'/tree/master/page';
+
+    return $github_prefix . str_lreplace('/','.md', $path);
+}
+
+function str_lreplace($search, $replace, $subject) {
+    $pos = strrpos($subject, $search);
+
+    if($pos !== false) {
+        $subject = substr_replace($subject, $replace, $pos, strlen($search));
+    }
+
+    return $subject;
+}
+
 ?>

themes/learn.jquery.com/page.php

@@ -11,7 +11,9 @@
 				<?php get_template_part( 'content', 'page' ); ?>
 
 				<?php comments_template( '', true ); ?>
-
+				<h2>Suggestions, Problems, Feedback</h2>
+				<a class="btn" href="<?php echo jq_get_github_url(); ?>"><i class="icon-github"></i>  Open an Issue or Submit a Pull Request on GitHub</a>
+
     </div>
     <!-- /inner -->
 

themes/learn.jquery.com/style.css

@@ -59,3 +59,7 @@ Template: jquery
 	letter-spacing: 0;
 	margin: 4px 0 0 0;
 }
+
+#body .inner .icon-github {
+        color:#30b9f8;
+}