[Parley] Fix wrong displayed grade/pregrade in practise mode
Review Request #128901 - Created Sept. 13, 2016 and submitted
The grade/pregrade display at the upper right corner of the practice
dialog fails for conjugation, gender of nouns and comparsion sessions.
The grades of the base entry were shown instead of the congugation
resp. article or comparsion ones.
The missing virtual methods in the appropriate backend classed were added.
Later it turned out that grade values are correct but pregrade values were displayed false. This was caused by a bug in libkeduvocdocument. The m_preGrade and m_intervall members of KEduVocText were not copied by the assignment operator. I posted a bugfix for review already.
So this patch won't work correct without the mentioned libkeduvocdocument patch.
Bugfix for conjugation practise mode. Grade/pregrade calculation were corrected. Right is to take the minimum grade only from the gramatical persons that are questioned and not from all persons stored for the vocable.
Revision 2 (+50 -19)