refactoring

.../java/org/orekit/rugged/adjustment/AdjustmentContext.java

...t/rugged/adjustment/GroundOptimizationProblemBuilder.java

...ed/adjustment/InterSensorsOptimizationProblemBuilder.java

.../orekit/rugged/adjustment/OptimizationProblemBuilder.java

src/main/java/org/orekit/rugged/api/Rugged.java

src/main/java/org/orekit/rugged/errors/RuggedMessages.java

...it/rugged/refining/generators/GroundMeasureGenerator.java

...kit/rugged/refining/generators/InterMeasureGenerator.java

...java/org/orekit/rugged/refining/measures/Observables.java

...va/org/orekit/rugged/refining/measures/SensorMapping.java

...rekit/rugged/refining/measures/SensorToGroundMapping.java

...rekit/rugged/refining/measures/SensorToSensorMapping.java

src/tutorials/java/AffinagePleiades/GroundRefining.java

src/tutorials/java/AffinagePleiades/InterRefining.java

src/tutorials/java/AffinagePleiades/Refining.java