Add OpenGraph meta tags on permalink page

Includes:
  - og:title
  - og:type -> article
  - og:image -> if there is a thumbnail
  - og:url -> permalink
  - og:description -> first 300 chars of raw description
  - article:published_time
  - article:modified_time
  - article:tag -> one OG meta tag for each shaare tag

Fixes #258

1 files changed, 1 insertions, 1 deletions

diff --git a/application/PageBuilder.php b/application/PageBuilder.php
index b1abe0d0..0efd24c3 100644
--- a/application/PageBuilder.php
+++ b/application/PageBuilder.php
@@ -101,7 +101,7 @@ class PageBuilder
             'version_hash',
             ApplicationUtils::getVersionHash(SHAARLI_VERSION, $this->conf->get('credentials.salt'))
         );
-        $this->tpl->assign('scripturl', index_url($_SERVER));
+        $this->tpl->assign('index_url', index_url($_SERVER));
         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
         $this->tpl->assign('visibility', $visibility);
         $this->tpl->assign('untaggedonly', !empty($_SESSION['untaggedonly']));