NAVI MUMBAI, April 16 -- The City and Industrial Development Corporation (CIDCO) is at the halfway mark this year in its massive demolition drive to raze unauthorised constructions and encroachments on its land. That's around 2,200 illegal structures demolished on 56 acres of land worth over Rs.2,500 crore in Navi Mumbai, Panvel, Ulwe and Dronagiri. The nodal agency had earmarked 300 sites for this year, around half of which have been cleared so far....