FMSLogo Code

Fix a misspelling ("one "-> "once")

Include updates for the Italian translation submitted by Francesco Simone Carta.

Rebuild the translation tables with make-translation-tables.pl after recent changes.
Most notably:
* removing duplicate translations
* adding a link bar when color name tables appendices exist
* changing the title to start with the language

Remove trailing whitespace

Fix a recent regression that broke the paths to the color files.

Prevent the same translation from appearing multiple times.
This happens incidently for languages which implement SLOWDRAW in startup.logoscript,
but even if it were intentional, there's no benefit to documentating it twice.

Remove an unneeded chomp (code cleaning)

Refactoring: extract a function for converting an English color name into
a path to an image file which shows the color. This centralizes some duplicated code.

Fix a bug in the translation table generation script that treated a
COPYDEF "FORWARD "FD within the Italian SLOWDRAW implementation in the
startup-1040.logoscript as an *Italian* translation of FD.

Add navigation links to the appendix when it includes translations for color names.
This was done at the request of Francesco Simone Carta.