Little cleanup.

config.rb

@@ -103,24 +103,24 @@ end
   end
 end
 
-bind 86 do |_, ws|
+bind 86, :none do |_, ws|
   next unless in_project?(ws)
   n = (($current_project - 2) % MAX_PROJECTS) + 1
   go_project(n, $current_sub)
 end
 
-bind 82 do |_, ws|
+bind 82, :none do |_, ws|
   next unless in_project?(ws)
   n = ($current_project % MAX_PROJECTS) + 1
   go_project(n, $current_sub)
 end
 
-bind 79 do |_, ws|
+bind 79, :none do |_, ws|
   next unless in_project?(ws)
   go_project($current_project, ($current_sub + 1) % SUBS)
 end
 
-bind 80 do |_, ws|
+bind 80, :none do |_, ws|
   next unless in_project?(ws)
   go_project($current_project, ($current_sub - 1 + SUBS) % SUBS)
 end