Now the paneling script copies the drc settings from the master
Which is important since ratsnest fills the copperlayers to the
outline according to the drc settings.

Also the Panel now contains two proper copies of the board sides
instead of mirrored copies.

fixes #5
fixes #2

removed switch ON/OFF silk
add slot mill for side seperation
add jlc silk mark for production number
mark values for led resistors as approximative