Associated Press: Shares in BP PLC rose slightly on Wednesday as analysts suggested the 20 billion pound ($30 billion) plummet in the company’s value since the Gulf of Mexico oil spill has been overdone. Analysts said its unlikely that BP will have to cut its dividend as a result of the accident and expect the London-based company’s final clean up and damages bill to be lower than the recent loss of share value. Stockbroker Panmure Gordon switched its recommendation from sell to buy, …