add a VoxelScriptingInterface to accept voxel addition in JS
add ability to send a voxel in JS via VoxelScriptingInterface
add doxygen comments to VoxelScriptingInterface
move audio and avatar classes into assignment-client target
add handling for number of instances to domain-server
add the ability to ask for multiple instances from JS page
resolve conflicts on merge with upstream master
allow the assignment-client to specify the type of assignment it desires
Merge pull request #946 from birarda/assignment

improvments to assignment flow