Logo renames

See merge request !1

- /Millennium/Live Picture Viewer.png
- /Millennium/Live Picture.png

- /Millennium/AXEL Player.png
- /Millennium/BitPlayer.png
- /Millennium/o2c-Player.png
- /Millennium/Octree View.png
- /Millennium/SVF viewer.png
- /Millennium/TCL.png
- /Millennium/ThingViewer.png
- /Millennium/Xara Plugin.png
- /Millennium/AXEL.png
- /Millennium/BitMagic.png
- /Millennium/o2c.png
- /Millennium/Octree.png
- /Millennium/SVF.png
- /Millennium/Tcl.png
- /Millennium/Thing.png
- /Millennium/Xara.png