When changing the theme to a dark theme, also change the
statistics theme. The code is a mess, because it crashes
when setting the theme right at the beginning. Therefore,
there is a "theme has been set" flag. Also, this directly
accesses the ThemeInterface singleton object. I have no
time to fight QML, sorry.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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