Profinet Configurator: Add help text area, and made objects show up more informative (Order Number etc.)

Xtt sevhist, SevPlotGroup added, PlotGroup and SevPlotgoup in fastavail, preset of layout and timerange, command 'open plotgroup', split digital curves, time range and curve drawing bugfixes

Ge, variable index with [&( )] syntax, display of parent attributes for object graphs iwith .<, window for object graphs works for more than two levels