Easy enable/disable of shadow settings for elevations

[Nadeng]

Instead of turning on/off shadows in the elevation settings, it would be much more practical to control those in either view settings or model view settings.

As for now, I need to have 2 sets of elevations, one with and one without shadows, or I have to accept that shadows either show or don´t show for one elevation throughout the whole project.

[GG_rakurs]

Many of the sections' and elevations' options should be moved to view options. Transparency being one of them also.

[A21_Ma_Si]

@GG_rakurs Yes, this is exactly what is needed. Having to create multiple sections to show the same thing with different settings and colors is a waste of time.