Fix activity display in tmux

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@2891 b32b6428-25c9-4566-ad07-03861ab6144f

docker/xaal-debian/tmux.conf

@@ -34,7 +34,8 @@ setw -g window-status-format ' #W:#I '
 setw -g window-status-current-format ' #W:#I '
 setw -g window-status-current-style fg=white,bold,bg=colour39
 setw -g window-status-style fg=colour39,bg=colour236,bold
-setw -g window-status-bell-style bold,fg=colour255,bg=colour1
+#setw -g window-status-bell-style 
+setw -g window-status-activity-style bold,fg=colour39,bg=colour238
 setw -g xterm-keys on
 
 # activity