- fixed loading of project files from version 0.7.8
(I don't know if it works for versions >0.7.8
and <0.8.3 since I don't have the code of those old
versions. The important question is: When were the 2 lines
if (style <= LineSymbols || style == Box)
s+=QString::number(symbol.pen().width())+"\t";
added to Graph::saveCurveLayout(int index).
This decides the first part of the condition
in lines 10165 and 10179 in ApplicationWindow.cpp.)
