Toggle view cube (interface)/0.99.5a

Displays the viewcube in model and world windows. Works in every camera mode (perspective, orthogonal, etc.). Allows to operate camera point of view by: The view cube displays colors for each axis:
 * dragging the cube with LButton or RButton to change the angle of a camera
 * clicking with LButton on the cube's faces, edges or vertices to align a camera on it
 * red for  axis
 * green for  axis
 * blue for  axis