fdo#72304 Preserve Chart data table properties during ODF import/export.

Change-Id: I767bb32fdaddcaf742923055cc86bb19138b42be
fdo#72304 Added properties to store Chart data table information, during import.

Change-Id: I77c458828b86bc31fae533e2e632d57237e44e6f
fdo#72304 Write Chart Data Table information back to XML.

During export access properties stored during import and write
back those. Currently we just support basic chart data table information
such as border and outline, there are more properties, which are pending.

Conflicts:
	chart2/qa/extras/chart2export.cxx

Change-Id: Icbc1245fc829f49833a8c307e029c3dd3dc2e0bd
fix OOXML validation error in new data table export code

Change-Id: I42b2fcdc914bc8c6066fdfce22ad05b5c01317d9