app menu: standardize Help/About/Quit

Use Help/About/Quit instead of About Notes/Help/Quit

https://wiki.gnome.org/Design/HIG/ApplicationMenus

https://bugzilla.gnome.org/show_bug.cgi?id=720135
help : Update delete page
help: Update the share note page
help: Update notebooks page
help : update Search page
Update news for 3.11.3