By MARYA SALAMAT Bulatlat.com MANILA – “Former president Gloria Macapagal-Arroyo should be jailed not just for plunder but also for treason.” This was the statement of Terry Ridon, spokesperson and general counsel of Kabataan Partylist, as he blamed the past administration— and dared the current Aquino government— to revise the downgrading of the Scarborough Shoal…