Fix the next batch of open items: the library, the inline patcher, the tray, the viewer's model and the three heads - #927

Fix the next batch of open items: the library, the inline patcher, the tray, the viewer's model and the three heads#927

SimonCropp merged 50 commits into

mainVerifyTests/DiffEngine:mainfrom

todo-leftoversVerifyTests/DiffEngine:todo-leftoversCopy head branch name to clipboard