fixes #82: stroke color and width are now taken from current selection
fixes #82: stroke color and width are now taken from current selection

When using the scribble or arrow tool the stroke color and stroke width will be set to the stroke color or width of the currently selected item. If stroke width is 0 it will default to two. if stroke color is transparent it will default to black.

spacedeck/spacedeck-open,spacedeck/spacedeck-open,spacedeck/spacedeck-open