kludgy-but-should-work fix for Bug #165170 (Cunjunctions not calculated for Japanese locale.

Thank you for reporting this localization bug... please report any other problems related to localization that you may run into!

I did see your second report as well, and I will get a fix ASAP.

The problem is that ComboBox->currentText() is translated, but the KSPlanet ctor expects the untranslated name string as a parameter.

This solution uses currentIndex() instead, and a switch to determine which planet should be used.
The solution is a bit fragile, because the planets are now assumed to appear in a particular order in the combobox.

I am planning to implement a better solution in the unfrozen branch, so please don't port these changes to unfrozen or summer; wait for the unfrozen fix.