notifications: use MessagingStyle, allow direct reply

Change-Id: I1681ec77903221fb43bdc96463bdca3b860f54ae
Reviewed-by: Sebastien Blin <sebastien.blin@savoirfairelinux.com>
diff --git a/ring-android/app/src/main/res/values/strings.xml b/ring-android/app/src/main/res/values/strings.xml
index 88fe824..4117ab7 100644
--- a/ring-android/app/src/main/res/values/strings.xml
+++ b/ring-android/app/src/main/res/values/strings.xml
@@ -108,6 +108,8 @@
     <string name="notif_channel_requests">Requests</string>
     <string name="notif_channel_file_transfer">File transfer</string>
     <string name="notif_mark_as_read">Mark as read</string>
+    <string name="notif_dismiss">Dismiss</string>
+    <string name="notif_reply">Reply</string>
     <string name="notif_incoming_file_transfer_title">Incoming file from %1$s</string>
     <string name="notif_incoming_file_transfer">Someone wants to send you a file</string>
     <string name="notif_outgoing_file_transfer_title">Sending file to %1$s</string>