tmux: Update social session

Made mail more prominent since it's my primary use-case of the social
session, so it deserves primary spotlight in the tmux tabs.

Added a mastodon view to the news tab to complement the rss feed.

tmux/.config/tmux/sessions/social.session

@@ -1,8 +1,10 @@
-rename-window news
+rename-window mail
+send-keys "neomutt" C-m
+new-window -n news
 send-keys "newsboat" C-m
+split-window -h
+send-keys "tut" C-m
 new-window -n matrix
 send-keys "gomuks" C-m
 new-window -n signal
 send-keys "siggo" C-m
-new-window -n mail
-send-keys "neomutt" C-m