Add a wizard for newbie users

[madmaxoft]

Add a wizard that would walk the new users through the basic commands.

Welcome to the Gallery. What would you like to do?
[Look around others' builds]
[Start building in my own area]

What gallery would you like to see?
<Gallery list>

Where in <GalleryName> would you like to look around?
[Start]
[Middle]
[End]
[Random]
[Most recent changes]

In what gallery would you like to build?
<Gallery list>

{execute command}
For your reference, your command is [/gal <command>], you can use it directly next time.