Use larger text for item quanity if mouse over and ctrl or alt pressed.
Add last exp gained column to the session window.  Write an optional console message if you gain exp above a threshold.
Items quantity zoom, use correct *not active* value.
Add max exp to session window, add row highlight using mouse.
Add sound for clicking session window highlight.
Added global colours for selected and highlighted items in lists.
Use standard highlight and selected colours in session window.
In counters window, hightlight mouse over and selected line when clicked.
In knowledge window, highlight name when clicked.  Use standard colours.
Merge git://github.com/raduprv/Eternal-Lands

Conflicts:
	counters.c
	session.c
Add messing header
Merge git://github.com/raduprv/Eternal-Lands