Sort command names in help output

[ullenboom]

Now it's unsorted

Built-In Commands
	version: Show version info
	quit, exit: Exit the shell
	clear: Clear the terminal screen
	help: Display help about available commands
	history: Display or save the history of previously run commands
	script: Execute commands from a script file

[fmbenhassine]

There does not seem to be a defined order in v3 neither, commands are defined in a map.

I would suggest to sort commands alphabetically (within each group) in v4.

[fmbenhassine]

There does not seem to be a defined order in v3 neither, commands are defined in a map.

#636 confirms there was no order in v3 neither.