It is very difficult to distinguish è, é and e based on the pronunciation - I use context to work out which one it is. First é doesn't occur on its own, only in words (usually at the end). Then, è and e can occur on their own but they mean different things - e means "and", è means "is"
Yes you can, in this case the use of "Lui" , the italian subject pronoun simply strenghten the subject. but as told before in italian we can omit the subject. here some reference : http://italian.about.com/library/fare/blfare113a.htm
no. in Italian we rarely use the pronoun, because each person has a different form of the verb. if you say E' un ragazzo, it can just be He or She, so it obvioulsy means He. in Italian we don't have IT, we have just masculine or feminine words, not neutrals, not a person for the objects..
There are several theories, but it must have been someone who didn't like kids: it either meant "servant", "errand boy" (e.g. Arabic raqqas = courier, Gaulish rao+gwas = little servant), or "ragamuffin", "bum" (e.g. English rag, Ancient Greek rhakos). It must have been common too, because the French settled on "garçon", which in Italian means "errand boy" (garzone).