Simplify conjugation class:

Simplify conjugation class:
 - only consists of the entries for one language
 - tenses moved directly into translation which contains a qmap<qstring,keduvoctranslation> now.

Removed superfluous replace empty string with "".

Cleanup.
Personal pronouns much more logical this way.

Breaks reading of old conjugations (will be fixed again soon).

svn path=/trunk/KDE/kdeedu/libkdeedu/; revision=707378