By Tony Jimenez LONDON, Oct 24 (Reuters) – Whoever coined the phrase ‘it never rains but it pours’ has unwittingly provided a graphic illustration of the miserable start to the season that is being endured by Chelsea and Jose Mourinho. Saturday’s 2-1 reverse at London rivals West Ham United was Chelsea’s fifth defeat in 10 Premier League games and everything that could go wrong for the champions, did go wrong. Mourinho, who already has a suspended FA stadium ban …