Merge #15884 - Fix #15880 Change "Show Query" link to a button

Pull-request: #15884
Fixes: #15880

Signed-off-by: William Desportes <williamdes@wdes.fr>

js/sql.js

@@ -438,8 +438,8 @@ AJAX.registerOnload('sql.js', function () {
      * @name    appendToggleSpan
      */
     // do not add this link more than once
-    if (! $('#sqlqueryform').find('a').is('#togglequerybox')) {
-        $('<a id="togglequerybox"></a>')
+    if (! $('#sqlqueryform').find('button').is('#togglequerybox')) {
+        $('<button class="btn btn-secondary" id="togglequerybox"></button>')
             .html(Messages.strHideQueryBox)
             .appendTo('#sqlqueryform')
         // initially hidden because at this point, nothing else

templates/database/search/main.twig

@@ -81,4 +81,4 @@
     {# This sqlqueryform div is used to load the delete form in the db search #}
 </div>
 {# Toggle query box link #}
-<a id="togglequerybox"></a>
+<button class="btn btn-secondary" id="togglequerybox"></button>