Enable Matrix message thread support.

This change enables experimental message threading support and upgrades
Synapse and Element to their latest stable versions.

Change-Id: I68334982168ffdac98a1602a157be727b04e58d6
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1286
Reviewed-by: informatic <informatic@hackerspace.pl>
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/app/matrix/lib/synapse/homeserver.yaml b/app/matrix/lib/synapse/homeserver.yaml
index 05c4d00..3f05dc8 100644
--- a/app/matrix/lib/synapse/homeserver.yaml
+++ b/app/matrix/lib/synapse/homeserver.yaml
@@ -137,3 +137,7 @@
 password_config:

    enabled: false

 

+## Experimental Features ##

+experimental_features:

+  # Message threading support

+  msc3440_enabled: true