Nextcloud Talk: Hide unrelated notifications and fix notifications count

`service.css` was updated to:

- unhide contacts menu;
- hide notifications that are not related to Nextcloud Talk;
- hide "Dismiss all notifications" as this action would also dismiss hidden
  notifications.

`webview.js` was updated to fix notifications (both direct and indirect) count
retrieval.

`README.md` was added.

1 files changed, 21 insertions, 0 deletions

diff --git a/recipes/nextcloud-talk/README.md b/recipes/nextcloud-talk/README.md
new file mode 100644
index 0000000..e6194c2
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+++ b/recipes/nextcloud-talk/README.md
@@ -0,0 +1,21 @@
+# Ferdi recipe for Nextcloud Talk
+
+Nextcloud Talk - Chat, video & audio-conferencing using WebRTC.
+
+To add Nextcloud Talk to Ferdi, Nextcloud server address should be provided in the field "Custom server".
+
+## Credits
+
+This recipe is based on [`recipe-nextcloud-talk`](https://github.com/meetfranz/recipe-nextcloud-talk).
+
+## Links
+
+Ferdi:
+
+- [Ferdi](https://getferdi.com/)
+- [Ferdi recipes](https://github.com/getferdi/recipes)
+
+Nextcloud:
+
+- [Nextcloud](https://nextcloud.com/)
+- [Nextcloud Talk](https://apps.nextcloud.com/apps/spreed)