Hopeful fix to ACs crash
Merge pull request #3126 from Atlante45/replace_qnetworkaccessmanager

Hopeful fix to ACs crash
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...
update the interface icon