FMSLogo Code

Fix misplaced </userinput> close tags.
These made it look like output from FMSLogo was something the user typed in.

Fix a typo in the front-matter for the Bitmap Commands chapter.

Translate the front matter for the BITMAP chapter into Spanish.

Translate the documentation for the common dialog box procedures into Spanish.
This translation was based on Rosario Ruiz's translation of the MSWLogo manual.

Fix an incorrect gender of "retrollamada"

Fix bad translations of "greater than or equal to" and "less than".

Remove extraneous+misleading indentation from the code listing.

Translate the documentation for DEBUGWINDOWS into Spanish.
This translation was based on Rosario Ruiz's translation of the MSWLogo manual.

Translate the documentation for the RADIOBUTTON* procedures into Spanish.
This translation was based on Rosario Ruiz's translation of the MSWLogo manual.

Fix a typo: "las valores" -> "los valores"