This patch adds the layers panel. It is based on the former layer panel patch, but heavily modified. The dialog function is now complete: layes can be created, removed and moved, layer properties can be changed (name, visible, printable, filled, locked, active). With the current cvs version of skencil some functions are not working because required functionality in the document editor is still missing. E.g. moving layer leads to an  exception:
 
[...]
  File "/home/ecker/sketch_create_diffs/tmp/Sketch/UI/layerspanel.py", line 431, in RaiseLayer
    doc.MoveLayerUp(idx)
  File "/home/ecker/sketch_create_diffs/tmp/Sketch/Graphics/document.py", line 884, in MoveLayerUp
    self.abort_transaction()
  File "/home/ecker/sketch_create_diffs/tmp/Sketch/Graphics/document.py", line 552, in abort_transaction
    raise AbortTransactionError
Sketch.Graphics.document.AbortTransactionError

The patch is applied in the usual way, i.e.

> cd sketch
> patch -lp1 < ../layers.patch

it requires the base patch to be applied