This is a subtask of tdf#165742: Chartex charts are lost on input from OOXML
and re-export.
Fix various aspects of input and output for chartex (and specifically
for funnel charts). This now allows for loading and re-exporting a
very basic funnel chart, with the result that MS Office successfully
loads the exported chart, and it looks similar (though not quite
identical) to the original.
Change-Id: I6eeb277e31250031604f7cdd21b80848a9c642ca
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/184758
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Jenkins
95b2c8b82e