Italian translation updates

Corrected typos and little updates to Italian Translation
Merge pull request #52 from marchitelli/master

Italian translation updates
Fixed bug -- wrong variable.
Eliminate unused variables.
Fixed unused variable.
Eliminated unused variables.
Avoid PHPMD warnings from work-in-progress code.
Eliminated unused variables.
Eliminated unused variable.
Eliminated unused variable.
Added comments; removed unused variables.
Removed unnecessary line.
Keyword highlight bolding.
Code simplification.
Added toArray() method to NamedList.
Eliminated unused variable.
Fixed all-caps typo.
Removed unused variables.
Removed unused code.
Removed unused variable.