Chinese-traditional converted to UTF-8.

It already was in UTF-8. It was only declared as BIG5. Trailing
spaces removed. TranslatorDecoder removed for the language.
Chinese traditional converted to UTF-8 plus getting ready for the update.
Chinese traditional almost up-to-date (trLegendDoc has the old content).
Slovene converted to UTF-8.

There was an encoding bug introduced in the past. The characters 'š',
'č', and 'ž' were substitued in editor instead of the funny nochars.
TranslatorDecoder removed for Slovene.
JP maintainer's name added an accent in the maintainers.txt.
translator_report.txt for the time.