Commission Regulation (EC) No 305/2007 of 21 March 2007 derogating temporarily from Regulations (EC) No 2402/96, (EC) No 2375/2002, (EC) No 2305/2003, (EC) No 969/2006 and (EC) No 1918/2006 as regards the dates for lodging applications and the issuing of import licences in 2007 under the tariff quotas for sweet potatoes, manioc starch, cereals and olive oil