edit face and t-spline, improve the surface quality

[fprico]

would be good to have better quality for production edit face also could habe better control points distibution. Also the quality when doing an análisis is not to good and it not gives a round surface. here are some good ideas of better quality Surface:

https://www.youtube.com/watch?v=OmFnq4_MkaY

https://www.youtube.com/watch?v=Cm7TJ9uL_8E

https://www.youtube.com/watch?v=BDnafZp7oSg

https://www.youtube.com/watch?v=Za3M3sUcGCA

Also the control points should be displayed outside of the surfaces.

[fprico]

also would be good to have edit face in the  history base modeling.