Implemented some missing methods for 2013.02

Implemented some of the newer 2013.02 methods and cleaned up some
variables related to getting RAM in MB.
Set serverToVipConnectivity for NAT rules

When requesting a new IP Block, Dasein now automatically sets
serverToVip to be true.
Fixed some typos in Network

OpSource doesn't support subnets and also, fixed a small typo
Removed unusued variable in SecurityGroup

Removed the inVlan checks in SecurityGroup to correctly display various
supported types.