[interface] Add link to documentation for status variables.

ChangeLog

@@ -130,6 +130,7 @@
 - bug #3141327 [relation] Foreign key input options
 - [export] Better handling of export to PHP array.
 - rfe #3158867 [privileges] No DROP DATABASE warning if you delete a user
+- [interface] Add link to documentation for status variables.
 
 3.3.10.0 (not yet released)
 - patch #3147400 [structure] Aria table size printed as unknown,

server_status.php

@@ -789,7 +789,8 @@ if (! empty($section['title'])) {
             $odd_row = !$odd_row;
 ?>
         <tr class="<?php echo $odd_row ? 'odd' : 'even'; ?>">
-            <th class="name"><?php echo htmlspecialchars($name); ?></th>
+            <th class="name"><?php echo htmlspecialchars($name) . PMA_showMySQLDocu('server-status-variables', 'server-status-variables', false, 'statvar_' . $name); ?>
+            </th>
             <td class="value"><?php
             if (isset($alerts[$name])) {
                 if ($value > $alerts[$name]) {