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...
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
Fix goTo* dialog bug with chat on Mac OSX

If chat was open, when pressing enter on Mac OSX the operation would not go through and
would focus on the chat window.  There seems to be a  deeper issue, but
it was decided to go with the simple solution of making these dialog
windows not of `Sheet` type.
Merge branch 'master' of git://github.com/highfidelity/hifi into 19828