[KPhotoAlbum] Category localization removal

[Tobias Leupold]

Hi list!

Johannes and I decided to remove the translatable names for the "standard" 
categories, because they caused a lot problems, and some of them simply can't 
be solved if the user switches Locales (as we know now after a lot of 
testing).

This means that we had to remove and change some entrenched KPA structures 
(dual storage of C locale and translated names, name() and text() distinction 
and so on). Very likely, we have some regressions.

Would everybody be so kind to check the current git master for working fine 
both with new and existing databases (have a backup ;-)? Also please check the 
categories settings dialog.

Any testing would be greatly appreciated :-)

Cheers, Tobias