e_config_dialog: reuse e_dialog on changes between basic and advanced.
e_config_dialog: reuse e_dialog on changes between basic and advanced.

This patch will reuse the same e_dialog and thus window while changing
contents between basic and advanced. The benefit, among many, is to
avoid titlebar flashing like hell when you click the toggle button.

By: manio


git-svn-id: 6ac5796aeae0cef97fb47bcc287d4ce899c6fa6e@41314 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

jordemort/e17,jordemort/e17,jordemort/e17