Added simple animation in Harmonia.

Nothing too spectacular so far - just established
animation manager and added AnimationBlend
(Opera style)
Only buttons and toolbar for a while.

See testbed.exe in http://www.terrainformatica.com/harmonia/HarmoniaDemo.zip

Or from Harmonia Wiki http://www.terrainformatica.com/wiki/pmwiki.php?pagename=Harmonia.Harmonia