Windows Look and Feel

.. akin to the Mac look and feel
.. still needs a bit of cosmetic work, but basically sound
.. also added in fixes to native file imports

Fixes #404
Fixes #504
Windows Look and Feel Mac Fixups

.. fixes the Mac build
.. Windows still crashes
Fix Windows Look and Feel crash on ICAL

.. fixed crash when compiling without ICAL
.. I found because my Windows build doesn't have ICAL
Whitespace cleanup
Merge branch 'master' of git://github.com/GoldenCheetah/GoldenCheetah into upstream_master
Merge branch 'upstream_master'