minor text fixes: accurate flavour text for Golden Knight testimonies collection quest, etc (#8826)

* make comment more accurate: members are removed, not banned

They can rejoin with an invitation in a private group or at any time in a public group.

* change windows line breaks to unix line breaks

* change flavour text of Golden Knight collection quest to reduce number of testimonies

* fix grammatical error noticed by mandyzhou

* improve message about not being able to send PMs because we often see people report it as a bug

* update instructions for cancelling Google subscriptions (thanks to Scea for noticing)

* change Delete Completed on-hover message - fixes #8598

* correct the Orb of Rebirth's text about pets and mounts (they are not locked)

website/views/shared/modals/task-notes.jade

@@ -1,10 +1,10 @@
-script(type='text/ng-template', id='modals/task-notes.html')
-  .modal-header
-    h4 Task Notes
-
-  .modal-body
-    textarea.form-control(ng-model="task.scoreNotes", row="10")
-
-  .modal-footer
-    .btn.btn-default(ng-click='$close()')=env.t('cancel')
-    .btn.btn-primary(ng-click="$close(task)")=env.t('save')
+script(type='text/ng-template', id='modals/task-notes.html')
+  .modal-header
+    h4 Task Notes
+
+  .modal-body
+    textarea.form-control(ng-model="task.scoreNotes", row="10")
+
+  .modal-footer
+    .btn.btn-default(ng-click='$close()')=env.t('cancel')
+    .btn.btn-primary(ng-click="$close(task)")=env.t('save')