export must be on left side since permanent rules are exported

src/user-rules.html

@@ -15,6 +15,7 @@
     <div class="pane left">
         <div>
             <h2 data-i18n="userRulesPermanentHeader"></h2>
+            <button type="button" id="exportButton" data-i18n="userRulesExport"></button>
             <button type="button" id="revertButton" data-i18n="userRulesRevert"></button>
             </div>
         <ul></ul>
@@ -27,7 +28,6 @@
             <button type="button" id="editStopButton" data-i18n="userRulesEditSave"></button>
             <button type="button" id="editCancelButton" data-i18n="userRulesEditDicard"></button>
             <button type="button" id="importButton" data-i18n="userRulesImport"></button>
-            <button type="button" id="exportButton" data-i18n="userRulesExport"></button>
             </div>
         <textarea spellcheck="false"></textarea>
         <ul></ul>