FMSLogo Code

Fix some title casing to only capitalize the first word.
This is what I did on all of the other sections, so it's at least consistent.

Shorten a sentence

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

Translate the documentation for the Special Variables into Spanish.

Translate the error message for "invalid state for instruction" to Spanish.
This was the only one that had not yet been translated and it stood out as weird in the documentation of error codes.

Remove an extranous space from the Spanish translation of when an unknown code is given.
This should have no impact on users, since it should never be seen.
However, it looked weird to me.

Translate the "Error Handling" section to Spanish

Add the Russian translations for procedure names which were removed in [r4664].
The new translations were provided by Igor Baglaev.

Replace "--" with em dashes.
Em dashes are more correct and they look better, too.

Translate the documentation for the macro procedures into Spanish.
The translation was partly based on Rosario Ruiz's translation of the MSWLogo manual.