Add 3D Gizmo control model

Add:

1. Auto-flip face normal, Only to the whole mesh.
2. Show the part of mesh on the ground.
3. Add coordinate indication
4. Add move, rotate, scale gizmo control

Fix:

1. Fix color not changed when Change the group after splited.
2. The saved stl file it's model moved if you add support then move the model.
3. *.Photons file preview image doesnot display on machine.
4. When you open a mesh file, rotate the model then scale will be wrong .

Modify:

1. Change model interior color.
2. Change machine xsize and ysize to valid print size
3. The window default display size
4. You can rotate the view with any angle.

Support *.pws、*.photon、*.photons file format now.

Add:

1. for Photons, software can output *.pws, *.photon, *.photons; but we will use pws format as default.
2. for Photon, software can output *.photon, *.pws;
3. Add machine type 'Photon Zero' .

Fix:

1. 4K display resolution does not work.
2. The mouse cursor has a certain offset in the win8 system.
3. In win7 system, you can't use mouse drag to move the window.

Modify:

1. Some support parameter changed.

Support Anti-aliasing for photon machine

Added:

1. Anti-aliasing for Photon type machine.

Fixed:

1. Machine z height not right when open first time.
2. Delete Basic Edition when published.
3. Crash when the model height less than bottom layers.