* centralize initial camera parameters + move camera closer to the scene center
* add motion smoothing when camera position is set
* improve grid material aspect
* Define 2 groups: "Settings" and "Scene"
* Settings
* add camera scale slider control
* move rendering modes back to an independent overlay outside the inspector
* Scene
* add button to control visibility of media info
* ease bidirectional navigation between 3D media list and graph
* use same mechanism to indicate selected/hovered elements
* remove 'frame' button (space gain + action available on double click)
* enable PrimitivePicking to enable picking on point clouds
* use OnDemand render policy
* activate FrustrumCulling + increase far plane
* add management of rasterized OpenGL points via a PointSize render
Keyboard Actions are never deactivated when focus is lost, leading to picking being enabled on a single click when Control was pressed in the 3D viewer and focus was lost to another Item.
* keep track of focus loss inside the DefaultCameraController
* use it to disable picking while Keyboard has not been pressed back in the 3D viewer
* do the same for 'moving' state with Alt modifier
