Use an unused shortcut for Reload without Extensions
Use default key map to restore the original key binding.
Always clone the user key map regardless of whether it is empty or not.
Merge pull request #9663 from adobe/tom/reload-shortcut-2

Use an unused shortcut for Reload without Extensions
Merge pull request #9665 from adobe/rlim/restore-orig-bindings

Use default key map to restore the original key binding.
Merge remote-tracking branch 'origin/master' into rlim/display-key-issue

Conflicts:
	src/command/KeyBindingManager.js