Remove menu accelerators from certain menu items if the map view loses focus.
Implemented Edit / Select Siblings command.

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>
Implemented Edit / Select Touching command.

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>
Improved CreateBrushTool.

1. Brushes created without a reference face were off grid in one dimension.
2. Improve thickness control for brushes with the mouse wheel.

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>