2nd part of bnc#870233: import font color from color fragment for SmartArts

SmartArt import ignores some fragments during import if
drawing fragment exists, which seems to be not complete.
In this case font style is blank (white) in data (and drawing)
fragment and the real value is defined in the ignored color fragment.

So first make color fragment parsing work, then apply font
color of "node0" style on nodes of the SmartArt.

Actually, it's a workaround, because "node0" style label
is hardcoded, for a proper solution layout fragment should
be parsed too to get the right style label, but
it interferes with the drawing fragment by now.

(cherry picked from commit 639571d52b1b7e4cf912803642ca245c5dd86839)

Conflicts:
	oox/source/drawingml/diagram/diagram.cxx
	oox/source/drawingml/diagram/diagramfragmenthandler.cxx

Change-Id: I7db89176a07eee928563d42d3896fbd02190dfa8
Reviewed-on: https://gerrit.libreoffice.org/9662
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>