Beginning of the Statistics rework

[Tomaz Canabrava]

so, this whole set of patches does: almost nothing, it's the beginning of
the work for the new statistics pane.
It's *safe* to merge, won't break anything, it will actually clear quite a
bit of code.
the new white part of the statistics widget is the new one that I'm working
with, the bottom part is the old one.
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