For express mode:

- Move the search bar up to the toolbar.

- Hide the "filter" combo box and lock down the first item.

- Hide the "scope" combo box and lock down the first item.
  (This is the combo box with "Current Folder" only in the mailer.)

- EShellView owns the search bar widget now instead of EShellContent.

- Insert several nasty hacks that will likely come back to bite me.

Conflicts:

	doc/reference/shell/eshell-sections.txt