2 weird CPU percentage diplays: See screenshot attached:

1) (In Red in the screenshot) In the "Tree view" mode, the "CPU %" collumn shows a number greater to 100 % for the first process !  (at first signt, it seems it an always growing number, summing the CPU percentage of all processes *since ksysguard is launched* (not resetted at each refresh). If you restart ksysguard, that number restarts from 0%)

2) (In Green in the screenshot) the sum of the the "CPU %" of all the active processes  doesn't match with the CPU total at the bottom of the window (in the screenshot, 4+2+3+1+1+1 is far from 54% - its's not just a refresh problem, it is always like that)



Reproducible: Always

Steps to Reproduce:
1. Launch ksysguard
2. For the first problem, set the "Tree view" mode