Translations:Release notes 0.19/204/en

Forum discussion, commit 7f07195f93, commit 6c699887c0; testing and bug fixing commit ab986d9a00, commit 15f440525e, commit 8ef3f13fbb, commit bf38ae958f, commit 74737f71fd, commit be257182ba, commit de3715908e, commit 916fe7ced3.
 * Techdraw_leaderline.png
 * New TechDraw LeaderLine and TechDraw RichTextAnnotation tools to create better annotations in the drawing page.
 * New TechDraw LeaderLine and TechDraw RichTextAnnotation tools to create better annotations in the drawing page.