Translations:Release notes 0.19/180/en

Pull request #3004, #3005. Forum discussion (development), forum discussion (announcement), commit 5ee99ca4ee, commit 36bc48c9bf.
 * Draft_layers.png
 * New Draft Layer tool that replaces the seldom used Draft VisGroup, providing a true layer system as it exists in other CAD systems. Draft Layer supports adding objects by drag-and-drop, controls object visibility and, optionally, object color.
 * New Draft Layer tool that replaces the seldom used Draft VisGroup, providing a true layer system as it exists in other CAD systems. Draft Layer supports adding objects by drag-and-drop, controls object visibility and, optionally, object color.