Add rgb option for plot

ChangeLog

lib/nomadgui-gtk.linux.x86.jar

lib64/nomadgui-gtk.linux.x86_64.jar

pom.xml

...ava/fr/ill/ics/client/control/parser/PlotDatasParser.java

.../client/control/parser/descriptor/PlotDataDescriptor.java

src/main/java/fr/ill/ics/client/control/plot/PlotData.java

...ain/java/fr/ill/ics/client/control/plot/PlotyManager.java

...va/fr/ill/ics/client/control/plot/ProjectionPlotData.java

...java/fr/ill/ics/client/control/plot/PropertyPlotData.java

...n/java/fr/ill/ics/client/control/plot/SurveyPlotData.java