clean up computeCentroids
asset source superclass
tidying up
more efficient asset updating
be more precise about texture
add from vector, make viewport more general
load thumbnails before meshes
preview loading bar for both meshes and images
remove asset notification
Add spinner while assets loading
landmark success failure notification
clean up spinner opts in notification
increate camera depth
Tidy up views, log all functions
tidy up mesh deletion
fix memory leak in mesh
correct disposal of landmark THREE assets
note that revert is currently a noop
add kohmal landmarks to demo
Merge branch 'master' into gh-pages