Translations:Release notes 0.19/86/en

Forum discussion (v1, alpha), forum discussion (v2), commit 656e1654ff, commit 93431edfba, commit f25826bba3, commit 11d8aaed61, commit 941968b37c. Forum discussion (testing), forum discussion (main thread); pull request #2446.
 * TechDraw_WeldingSymbol_example.png
 * New TechDraw Weld Symbol tool to provide welding symbols. One of the most requested features from the older Drawing Workbench is finally in TechDraw.
 * New TechDraw Weld Symbol tool to provide welding symbols. One of the most requested features from the older Drawing Workbench is finally in TechDraw.