Merge branch 'master' into SLO_implementation

...escartes/dql/connector/nop/AbstractNopQueryConnector.java

...s/dql/connector/nop/ModelStructureQueryConnectorImpl.java

...l/connector/nop/PerformanceMetricsQueryConnectorImpl.java

...g/xtend-gen/tools/descartes/dql/lang/generator/.gitignore

...scartes.pavo/src/tools/descartes/pavo/GraphicsEngine.java

...src/tools/descartes/pavo/controller/ExportController.java

...ls/descartes/pavo/controller/VisualizationController.java

...rtes.pavo/src/tools/descartes/pavo/helper/MathHelper.java

.../src/tools/descartes/pavo/result/ResultContainerPavo.java

...avo/src/tools/descartes/pavo/result/SeriesResultPavo.java

...tes.pavo/src/tools/descartes/pavo/tests/TestHeatQuery.dql

...scartes.pavo/src/tools/descartes/pavo/types/BarChart.java

....pavo/src/tools/descartes/pavo/types/DifferenceChart.java

...escartes.pavo/src/tools/descartes/pavo/types/HeatMap.java

...cartes.pavo/src/tools/descartes/pavo/types/LineChart.java

tools.descartes.pavo/src/tools/descartes/pavo/view/View.java