Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

Summary: The sentence about ChangeEvents generation was removed
Reviewed-by: peterz

Summary: JSlider registers as an image observer of label's icon
Reviewed-by: alexp

Summary: Removed unnecessary code like unused variables, castings, imports etc
Reviewed-by: peterz

Summary: avoid using constructors when unique values are not necessary
Reviewed-by: volk, igor, peterz