Adding Ring Notepad to the Tools Menu

Hello

In this little update we added Ring Notepad to the Tools menu in PWCT2 environemnt.

Since PWCT2 comes with the Ring programming language version 1.19, We can use Ring directly through PWCT2 distribution.

Ring is a free open-source project (MIT License) and PWCT2 is a project developed using Ring.

Ring Notepad is the standard code editor for the Ring language.

Also, we added the ring/documents/build/html files so we can browse Ring documentation using the web browser that comes with Ring Notepad.

Thanks!