* helm.el (helm-map): Remove helm-select-nth... actions.
Bind all actions from 1 to 9 to C-1/.../9 and document it.
(helm-get-candidate-number): Allow counting actions.
(helm-select-action): Update mode-line when coming back from action buffer.
(helm-show-action-buffer): Use an appropriate mode-line string.
Remove nth... fn now unuseful.
* helm-help.el: Document all.
* helm-config.el: Update autoloads.