Fix reset to defaults in the fonts KCM
Summary:
Turns out one of the properties was utterly broken emitting the wrong
signal, and the defaults() method was missing a piece of state to reset.
Since it was making my eyes bleed I also removed the "const int &"
parameters in the process. :-)
Reviewers: Plasma, bport, davidedmundson, mart
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D25094