move the shortcuts of the Windows installer into the client as a menu

[soundmud]

Since Windows 8 and 10 encourages using search instead of menus to launch a program, the user cannot rely anymore on the menu hierarchy. Moreover this feature is OS dependent and doesn't appear in the zip-to-desktop Windows version either.

That's why it could be more interesting to rely on an in-client menu to:

• browse the manual
• use a common mod combination (sound pack, crazy mod, etc)
• browse the website of a mod or even the main client.

The only remaining shortcut would be: "SoundRTS unstable" or "SoundRTS 1.2", etc.

[soundmud]

Solved by commits f0aef74e66004d60078bdc2ec31df8925105ea58 , 7740e92ad0b999db1d1b8bdb96d133bf3458ff6b and fa8bf20007bbc854005ead8472d4efaa1febdce7 .