WCAG 1.3.1,WCAG 4.1.2: Ensures every form element has a label (textarea) (#1549)

src/Explorer/Tabs/QueryTablesTab.html

@@ -25,6 +25,7 @@
           name="query-editor"
           rows="5"
           cols="100"
+          aria-label="Query text editor"
         ></textarea>
       </div>
     </div>