Split out from issue2551045(Implementing wiki move to Waldmann-EDV):

The old roundup wiki style needs to be fixed to be current with
themes from moinmoin 1.9.10. Especially compare to the modernized
style.

List of issues:
* An important box
  as configured with
http://hg.moinmo.in/moin/1.9/file/tip/docs/resetpw/wikiconfig-note-snippet.txt
is not shown with the roundup.py theme
  
as it misses to call 
http://hg.moinmo.in/moin/1.9/file/tip/MoinMoin/theme/modernized.py#l90

in header() and editorheader()

A comparision shows that some other calls are also not made,
like the following two:
{{{
# Post header custom html (not recommended)
self.emit_custom_html(self.cfg.page_header2),

# Start of page
self.startPage(),
}}}

* The icons used are a bit outfashioned as modernized as modern icons.
* A layout and icons can be improved overall like with the memodump.
https://moinmo.in/ThemeMarket/memodump