Moved styles to CSS. Added more classes to CSS for future customization.

git-svn-id: https://plugins.svn.wordpress.org/redi-restaurant-reservation/trunk@872368 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated Italian translation

git-svn-id: https://plugins.svn.wordpress.org/redi-restaurant-reservation/trunk@872369 b8457f37-d9ea-0310-8a92-e5e31aec5664