Updated mediawiki/extensions
Project: mediawiki/extensions/Echo  e3bdd619522761519977ae2c077fc899dc97f6c8

Preventing empty payloads from being created when using summary

Also making sure that footer has some amount of separation from
the notification title even if there is no payload.

Change-Id: I85a1a7989539044a0b0b53e76e70ddee9bb7165c