documentation update
added graph and axissystem background
added axisSystemForegroundColor
added graph title and foreground options
check for empty variables map in Options.cc
re-implemented program option support
Graph constructor/decstructor
apdapt to changes in SciDatVis
SciDatVis and WinSciDatVis constructors with height/width
separated FileInit and WinSciDatVis
