fix dashboard padding

public/ng/css/gogs.css

@@ -932,7 +932,7 @@ ol.linenums {
   margin: -4px 10px 0 0;
 }
 #dashboard {
-  padding: 24px 0;
+  padding: 1.5em;
 }
 #dashboard-sidebar .panel-header h4 {
   margin: 0;