Updating Converse upstream (with bootstrap5):

* bootstrap 5 compatibility
* other Converse updates integration
* hack to get the sidebar work as with Converse v10.
* modal onHide was renamed close.
* fix slow mode infobox margin.
* fix margin
* shorter action label, for better dropdown UX.

conversejs/custom/plugins/poll/components/poll-form-view.js

@@ -113,7 +113,7 @@ export default class MUCPollFormView extends CustomElement {
       await api.sendIQ(iq)
 
       if (this.modal) {
-        this.modal.onHide()
+        this.modal.close()
       }
     } catch (err) {
       if (u.isErrorStanza(err)) {

conversejs/custom/plugins/poll/modals/poll-form.js

@@ -13,8 +13,8 @@ class PollFormModal extends BaseModal {
     super.initialize()
   }
 
-  onHide () {
-    super.onHide()
+  close () {
+    super.close()
     api.modal.remove('livechat-converse-poll-form-modal')
   }
 

conversejs/custom/plugins/poll/templates/poll-form.js

@@ -44,7 +44,7 @@ export function tplPollForm (el) {
 
             ${formFieldTemplates}
 
-            <fieldset class="buttons form-group">
+            <fieldset class="buttons">
               <input type="submit" class="btn btn-primary" value="${i18nOk}" />
             </fieldset>
           </form>`