The "console only" mode, which apparently is intended to mean something
stronger than merely "headless" mode (?), is not checked much currently. But I
plan to start checking it to avoid doing things that make no sense when
running LO code through LibreOfficeKit.

(If overloading "console only" mode turns out to be a bad thing, we will have
to introduce a third degree of headlessness then, "LOKit mode".)

Change-Id: Id4cd16c4d68e2f1aba8a6b8fba83325b7262563a