Uilist in ob3

Created by: zeffii

• auto self update after operator removes items (Doesn't work for the last object.. not sure why yet)
• fix "Matrixes" typo in socket name
• Sort is not used for ui list display order
• maybe (want) : objs which are not connected from their verts,edges,polygons sockets, shall only do work to obtain their matrix.
  • this might mean adding an explicit def update to detect a change in socket connections.. -- remember, when you disconnect outgoing sockets on node X, node X's process function is not called.

maybe : display VEFM (Vectors, Edges, Faces, Matrix) icons