Use minified publickey.js (with cache-buster) when available (#5254)

program/js/app.js

@@ -3577,14 +3577,6 @@ function rcube_webmail()
 
       // list recipients with missing keys
       if (!isvalid && missing_keys.length) {
-        // load publickey.js
-        if (!$('script#publickeyjs').length) {
-          $('<script>')
-            .attr('id', 'publickeyjs')
-            .attr('src', ref.assets_path('program/js/publickey.js'))
-            .appendTo(document.body);
-        }
-
         // display dialog with missing keys
         ref.show_popup_dialog(
           ref.get_label('nopubkeyfor').replace('$email', missing_keys.join(', ')) +

program/steps/mail/compose.inc

@@ -285,6 +285,7 @@ else if (count($MESSAGE->identities)) {
 // process $MESSAGE body/attachments, set $MESSAGE_BODY/$HTML_MODE vars and some session data
 $MESSAGE_BODY = rcmail_prepare_message_body();
 
+$OUTPUT->include_script('publickey.js');
 
 // register UI objects
 $OUTPUT->add_handlers(array(