Adds two ConfigurationAttribute :
CAList that represents a list of value (abstract),
OwsContext that represents an OwsMapCOntext given by OrbisGIS.
Adds an interface CARefresh that define the refreshing of the value of a ConfigurationAttribute.
Changes the ConfigurationAttribute methods name and updates all the classes.
Adds a class giving a link to OrbisGIS,
Adds a ConfigurationAtribute representing a OwsMapContext and its renderer.