[mod] app_wishlist: remove Hastebin and Flarum, add Matrix.

apps_wishlist.md

@@ -36,7 +36,6 @@ The following list is a compiled wishlist of applications that would be nice-to-
 - [Ethersheet](https://ethersheet.org)
 - [Fail2web](https://github.com/Sean-Der/fail2web)
 - [FileTea](https://filetea.me)
-- [Flarum](http://flarum.org)
 - [Fossil](http://www.fossil-scm.org)
 - [GetSimple CMS](http://get-simple.info)
 - [Git-annex](http://git-annex.branchable.com)
@@ -48,7 +47,6 @@ The following list is a compiled wishlist of applications that would be nice-to-
 - [Guacamole](http://guac-dev.org)
 - [h5ai](http://larsjung.de/h5ai)
 - [Hackpad](https://github.com/dropbox/hackpad)
-- [Hastebin](https://github.com/seejohnrun/haste-server)
 - [Headphones](https://github.com/rembo10/headphones)
 - [Hi Buddy](http://hibuddy.monkeypatch.me)
 - [Huginn](https://github.com/cantino/huginn)
@@ -78,6 +76,7 @@ The following list is a compiled wishlist of applications that would be nice-to-
 - [Lufi](https://git.framasoft.org/luc/lufi)
 - [MaidSafe](http://maidsafe.net)
 - [Mailpile](https://www.mailpile.is)
+- [Matrix](https://matrix.org) – [Synapse](https://github.com/matrix-org/synapse)
 - [MatterMost](https://github.com/mattermost/platform)
 - [MediaCrush](https://imgrush.com)
 - [MinigalNano](https://github.com/sebsauvage/MinigalNano)