Material Editor Grouping

[jason_guinan]

We need the ability to select multiple materials and group them in the slate material editor. Right now, when pressing 'L' to lay out all, it puts all materials in one long column. Selecting multiple materials and grouping them should place them within their own square and allow us to either lay out all horizontally or vertically via menu option. We should also be able to minimize groups to declutter the material editor. Often times I have multiple maps for lights and environments, multiple materials for a single object, and test materials to keep on hand. Another option to organize without having to group would be to select multiple materials, and have a "lay out all horizontally' option to keep those materials from stacking horizontally.

I've seen this requested in the past. Time to request again.