add some error messages to PaymentManager
Merge pull request #3227 from ey6es/metavoxels

Basic metavoxel-based heightfields.
Merge pull request #3231 from birarda/domain-server-auth

add some error messages to PaymentManager
clear domain settings on NodeList reset
add distinction between hard reset and soft reset for DomainHandler
remove extra debug line
Merge pull request #3234 from birarda/domain-server-auth

clear domain settings on NodeList reset
remove unused variable in VoxelEditPacketSender
Merge pull request #3235 from birarda/domain-server-auth

remove unused variable in VoxelEditPacketSender
allow assignments to pull script without session cookie
Merge branch 'master' of https://github.com/highfidelity/hifi into domain-server-auth
Merge pull request #3236 from birarda/domain-server-auth

allow assignments to pull script without session cookie
fix an order mistake in DS handling HTTP requests
Merge pull request #3237 from birarda/domain-server-auth

@birarda is dumb, fix an order mistake
Frustum class/box intersection testing.
Filter terrain, points, spanners by frustum intersection.