Change order of tmux hostname and session name

This makes the hostname more prominent.

tmux/tmuxcolours.conf

@@ -19,7 +19,7 @@ set-option -g window-status-current-format "#[bg=red] #[fg=colour231]#I #[bold]#
 # Left status.
 # `#S` session name, `#h` = hostname
 set-option -g status-left-length 90
-set-option -g status-left '#[fg=colour189,bg=colour55] #S #[fg=colour55,bg=colour233] #h #[fg=colour233,bg=colour234]'
+set-option -g status-left '#[fg=colour189,bg=colour55] #h #[fg=colour55,bg=colour233] #S #[fg=colour233,bg=colour234]'
 
 # Right status.
 # `#H:#M %d/%m/%y` = hours, minutes, day, month, year