Because attempting to compile the new voxel texture shader causes my system
(Ubuntu LTS, Intel graphics) to hang, change it to compile lazily when
activated.
Merge pull request #3127 from ey6es/master

Because attempting to compile the new voxel texture shader causes my sys...
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Remove multithread access from NetworkAccessManager for the time being
Removed deprecated moveToThread()
update the interface icon
Merge pull request #3129 from birarda/master

update the interface icon
Got rid of unneccessary Q_DISABLE_COPY()
Merge pull request #3128 from Atlante45/replace_qnetworkaccessmanager

Downgrade of NetworkAccessManager
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Rather than backing out when we find that the delta is too big, we can just
write the whole thing and copy it over (with some mapping fiddlery) if it
turns out to be too big.