Fix LTM title filter color bug

.. the title of an LTM chart doesn't change when you
   select or deselect a filter in the sidebar.
Fix sidebar sizing bugs

.. part of the refactor of mainwindow saw the sidebar
   sizes independently set and therefore using different
   settings.

.. we now use the old setting if first time through, or
   if first time run for athlete set a sensible default.
merge master into personal