Also, add whole bunch of missing cases while at it.

The factor here is used to divide, so the parameters have to be
switched; this has always been broken but probably before
3ca2bef7 nothing called this.
This also reverts 7bf1fa37 because
that was a workaround for the problem in the wrong place.

Crashes on import of bugdoc from fdo#48969 with
 Assertion `n < this->size()' failed.
(regression from b35980d9)

CppunitTest_sc_databaserangeobj can fail with
'UcbContentProviderProxy::getContentProvider - No provider for ´com.sun.star.help.XMLHelp.'

added Application.DisplayExcel4Menus, Application.DisplayNoteIndicator, Application.ShowWindowsInTaskbar. Althought these attributes of the Application object don't do anything they allow setting and retrieval of the state. We could make a usable implementation for Application.DisplayNoteIndicator, the others though don't really seem to have any useful equivalent in the libreoffice world

looping vector iterators and push_back/erase don't mix well

The \'0d string should not be an exception when ignoring characters
after the \u control word.

This is not yet perfect but should export already the conditional
formatting and a great deal of the styles to xlsx

Still missing:

font export
number format export
some advanced conditional formats features