Reenabled frustum culling
syncing with branch develop
Merge pull request #83 from jtorresfabra/fix_pagedlod

Reenabled frustum culling
Fixes resize code
Updates examples template
Updates more examples for the resize change
Updates even more examples for the resize change

Replaced createTextureQuad with createTextureQuadGeometry
Added a CSS rule to fix middle mouse button drag on Firefox
Added a HTML attribute on canvas to disable the context menu (right-click)
Fixes tests
Updates test of examples
Makes Leap not mandatory