Fix bug with hidding menu when operator's local name is blank

src/mibew/libs/operator.php

@@ -760,6 +760,7 @@ function prepare_menu($operator, $has_right = true)
 {
     $result = array();
 
+    $result['showMenu'] = true;
     $result['operator'] = to_page(get_operator_name($operator));
     $result['goOnlineLink'] = getlocal2(
         "menu.goonline",

src/mibew/styles/pages/default/templates_src/server_side/_menu.handlebars

@@ -8,7 +8,7 @@
             </li>
         {{/unless}}
     {{/if}}
-    {{#if operator}}
+    {{#if showMenu}}
         <li>
             <h2>{{l10n "right.main"}}</h2>
             <ul class="submenu">