Correct the tabindex of controls in lines putting in sequence.

This first issue was motivated by an email received from @umtkyck about this project. Almost ten years have passed since I finished this project (2010), but, I still had many ideas for it. The email reminded me and provoked me to put these ideas in practice. English translation is one of them.

This english translation includes:

• GUI
• File names, classes, structs, and interfaces
• Members, parameters and variables

This refactoring includes also the use of C# naming conventions.

In the future we will think in internationalization, now is only english translation.

small refactoring

• put the current functions in the correct files