Code Cleanup: Win compile with CLucene
LTM: Add fill curves option

.. so you can fill below the curve.
.. also added a 'version' field for the file format for metric
   details, so we can add more fields later.
UI Nits: Calendar '<' and '>' icons

.. use the native styling.
UI Nits: Use our own icons not standardIcons

.. for left and right in the calendar, since the standard ones
are pretty ugly.