How to reset safari 9.0.3
Safari can also be reset from the command line.

Open a Terminal window and type the following or to be safe launch finder and navigate to the following locations and manually delete or move these

mv ~/Library/Safari ~/Desktop/Safari-`date +%Y%m%d%H%M%S`; \
rm -Rf ~/Library/Caches/Metadata/Safari; \
rm -Rf ~/Library/Caches/com.apple.Safari; \
rm -Rf ~/Library/Preferences/Apple\ -\ Safari\ -\ Safari\ Extensions\ Gallery;
rm -Rf ~/Library/Preferences/com.apple.Safari.LSSharedFileList.plist; \
rm -Rf ~/Library/Preferences/com.apple.Safari.RSS.plist; \
rm -Rf ~/Library/Preferences/com.apple.Safari.plist; 


This should give you a fresh Safari with the menu item option to reset Safari again.