Revert "bnc#886540: Let's not push the available area down when no titles are there."

This reverts commit b398ed8e3f95b75705bb2e53d49589ef7fdbb1c7:  "Aug 06 10:11:53
<sberg> moggi, b398ed8e3f95b75705bb2e53d49589ef7fdbb1c7 broke
CppunitTest_chart2_xshape, very many attributes in
chart2/qa/extras/xshape/data/reference/fdo75075.xml have wrong values now;
what's the best way to fix? manually fixing fdo75075.xml (assuming the new
values are even correct?) looks /very/ tedious.  better revert the commit for
now?"