[Updated] Mouse support READY!

Currently I have narrowed down my attention to the process of providing full mouse support for the UI. I've added mouse event processing to 70% of the UI elements already, and also cursor replacement, different cursor types for normal/scrolling/tuning values etc. Still more is to be done, the remaining UI element classes awaiting, along with the addition of new Close signs for the windows that lack them, reviewing the UI mechanisms of the already present windows. And of course more and more testing. :) Things are in SVN, so anyone interested can help in testing as well.
Update: spending some more hours on the matter today, now it's time to announce: the mouse support dev is completed and committed to SVN!