Merge pull request #2113 from pi-hole/fix_php_userini

Remove invalid PHP config file and change alert message for `db_queries.js`

.user.php.ini

@@ -1,2 +0,0 @@
-memory_limit = 256M
-max_execution_time = 300

scripts/pi-hole/js/db_queries.js

@@ -84,7 +84,8 @@ function handleAjaxError(xhr, textStatus) {
     alert(
       "An unknown error occurred while loading the data.\n" +
         xhr.responseText +
-        "\nCheck the server's log files (/var/log/lighttpd/error.log when you're using the default Pi-hole web server) for details. You may need to increase the memory available for Pi-hole in case you requested a lot of data."
+        "\nCheck the server's log files (/var/log/lighttpd/error.log) for details.\n\nYou may need to increase PHP memory limit." +
+        "\n\nYou can find more info in pi-hole's FAQ:\nhttps://docs.pi-hole.net/main/faq/#error-while-loading-data-from-the-long-term-database"
     );
   }