Add summed up numbers to ga_node_reports graph

ga_node_reports-add_sum_for_graph.patch

diff --git a/ga_node_reports.pages.inc b/ga_node_reports.pages.inc
index f0eb797..8bc4426 100644
--- a/ga_node_reports.pages.inc
+++ b/ga_node_reports.pages.inc
@@ -39,6 +39,13 @@ function ga_node_reports_view_node_report($node) {
     // Chart details building.
     $chart_date = $chart_page = $chart_session = array();
 
+    // Sum up pageviews and sessions.
+    $sum = array('pageviews' => 0, 'sessions' => 0);
+    foreach ($results->rows as $records) {
+      $sum['pageviews'] += $records['pageviews'];
+      $sum['sessions'] += $records['sessions'];
+    }
+
     foreach ($results->rows as $records) {
       $chart_date[] = date('d-m-y', $records['date']);
       $chart_page[] = $records['pageviews'];
@@ -46,7 +53,10 @@ function ga_node_reports_view_node_report($node) {
     }
 
     // Google chart integration.
-    $chart_header = array('Pageviews', 'Sessions');
+    $chart_header = array(
+      "Pageviews\n Σ: " . $sum['pageviews'],
+      "Sessions\n Σ: " . $sum['sessions'],
+    );
     $chart_rows = array($chart_page, $chart_session);
     $settings['chart']['pageview_session'] = array(
       'header' => $chart_date,