HyperKitty: add GDPR warning on the login page

roles/mailman/files/login_extra_top.html

@@ -0,0 +1,6 @@
+<p>
+By subscribing or posting to these mailing lists, you agree that any email
+to the list is public and viewable worldwide (unless it's one of the few private mailing-lists).
+For more details, see our
+<a href="https://fedoraproject.org/wiki/Legal:PrivacyPolicy">Privacy policy</a>.
+</p>

roles/mailman/tasks/main.yml

@@ -341,9 +341,12 @@
         state=directory owner=root group=root mode=0755
   tags: mailman
 
-- name: create the hyperkitty templates override dir
-  file: path="{{ mailman_webui_basedir }}/templates/hyperkitty"
+- name: create the hyperkitty templates override dirs
+  file: path="{{ mailman_webui_basedir }}/templates/{{ item }}"
         state=directory owner=root group=root mode=0755
+  with_items:
+  - hyperkitty
+  - django_mailman3
   tags: mailman
 
 - name: install our fedora-specific logo
@@ -371,6 +374,11 @@
         dest="{{ mailman_webui_basedir }}/templates/hyperkitty/headers.html"
   tags: mailman
 
+- name: install our fedora-specific login page extension
+  copy: src=login_extra_top.html
+        dest="{{ mailman_webui_basedir }}/templates/django_mailman3/login_extra_top.html"
+  tags: mailman
+
 - name: Install our fedmenu js hook
   template: src=bottom.html
             dest="{{mailman_webui_basedir }}/templates/hyperkitty/bottom.html"