org.el (org-insert-heading): Be more consistent in respecting content

org.el (org-insert-heading): Be more consistent in respecting content

* org.el (org-insert-heading): With one universal prefix
argument or `org-insert-heading-respect-content' set to `t',
always respect the content, i.e. don't insert a list item and
don't convert normal lines into headings.  Update docstring.
(org-insert-heading-respect-content): Remove unused arg.
(org-insert-todo-heading-respect-content): Don't use
`org-insert-todo-heading-respect-content', use the second
argument of `org-insert-todo-heading' instead.

* org-mobile.el (org-mobile-edit): Use only one arg.

Thanks to Bernt Hansen for reporting this.