Translations:Release notes 1.0/74/en


 * The toolbar button for Constrain refraction (Snell's law) has been removed. Commit ef62fc3
 * The toolbar buttons for Select redundant constraints and Select conflicting constraints have been removed. Pull request #7568
 * The toolbar button for Stop operation has been removed. Pull request #7569
 * Edit Control widget, 'Grid size' label removed, 'Show grid' checkbox renamed 'Grid'. Pull request #7577