Fix #2600 delete noindex from base template

Author: fnielsen

scholia/app/templates/base.html

@@ -61,7 +61,7 @@
 
 {% block metas %}
 <meta charset="UTF-8">
-<meta name="robots" content="noindex, nofollow">
+<meta name="robots" content="nofollow">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
 <meta name="og:url" content="{{ 'https://scholia.toolforge.org' + request.path }}" />