LMS-1483 Handling of configuration parameters for graph generation.

screening/etc/tabular-data-graph.properties

...d/openbis/dss/generic/server/TabularDataGraphServlet.java

...d/openbis/dss/generic/server/graph/ITabularDataGraph.java

...server/graph/TabularDataGraphCollectionConfiguration.java

...s/generic/server/graph/TabularDataGraphConfiguration.java

.../openbis/dss/generic/server/graph/TabularDataHeatmap.java

...generic/server/graph/TabularDataHeatmapConfiguration.java

...neric/server/graph/TabularDataHistogramConfiguration.java

...nbis/dss/generic/server/graph/TabularDataScatterplot.java

...ric/server/graph/TabularDataScatterplotConfiguration.java

...er/graph/TabularDataGraphCollectionConfigurationTest.java

...nbis/dss/generic/server/graph/TabularDataHeatmapTest.java

.../dss/generic/server/graph/TabularDataScatterplotTest.java

...sx/cisd/openbis/dss/generic/server/graph/graph.properties