new release version,

Features:
- reset view before loading new mesh
- reset view when pressing space
- clustered msh can be displayed
- shadow mesh, nulls, bones, hidden things are no longer displayed
- now mulitpolygons can be displayed
- fasten and improved code
Bugs:
- cluster mixed up textures,
- at most mesh only every 2nd triangle is displayed,
- triangulation is not very good (DarthDUCK's Proton charge)