Raft missing controls for bottom-most layer

[jaggzh]

With raft layer count set higher than 1, we begin to put a light-green ("support material" color?) expanded layer below it. No options seem to control this (like its spacing).

I don't know what it is to say how I think it should function, but I do know it should either be disable-able or configurable. :)
It doesn't honor Support Spacing.

To start, if made configurable just for rafts, it should have:

• A name :) "Raft Bottom"?
• Enable/disable (this should probably be a count): "Raft Bottom Layers: 0, 1 (default), 2 (medium), 3 (heavy)
• Line spacing

Later on we could have:

• Outline count: 0, 1 (default), 2 (heavy), ...
• Fill type (rectilinear, concentric, honeycomb...)
• Fill angle

Pic of part with 3 raft layers. Bottom light green is the unconfigurable one:

Current Support Settings:

Skirt/brim settings: