RandomVariable Constraints

See merge request !2

# Conflicts:
#   tools.descartes.dml.mm.applicationlevel/src/tools/descartes/dml/mm/applicationlevel/functions/util/RandomVariableHelper.java
#   tools.descartes.dml.mm.applicationlevel/src/tools/descartes/dml/mm/applicationlevel/parameterdependencies/InfluencableModelVariable.java
#   tools.descartes.dml.mm.applicationlevel/src/tools/descartes/dml/mm/applicationlevel/parameterdependencies/impl/ParameterdependenciesFactoryImpl.java
#   tools.descartes.dml.mm.applicationlevel/src/tools/descartes/dml/mm/applicationlevel/parameterdependencies/impl/ParameterdependenciesPackageImpl.java

ApplicationLevel Functions Model: implement constraints ValueMustBeGreaterThanZero for IntSample, DoubleSample, IntLiteral, DoubleLiteral; MeanMustBeGreaterThanZero and DistanceMeanToFourTimesSigmaMustBeGreaterThanZero for NormalDistribution

ApplicationLevel Functions Model: implement constraint RateMustBeGreaterThanZero for ExponentialDistribution

ApplicationLevel Functions Model: implement constraints SumOverProbabilitiesOfSamplesMustBeOne for BoxedPDF and ProbabilityMustBePositive for ContinousSample

ApplicationLevel Functions Model: implement constraint SumOverProbabilitesOfSamplesMustBeOne for all PMF SampleLists; implement constraint ProbabilityMustBePositive for Sample

ApplicationLevel Functions Model: IntSampleList: implement constraint SumOverProbabilitiesOfSamplesMustBeOne

Randomvarhelper

See merge request !1

add csv replays; adjust ReplayFile test models to point to new csv replays; fix RandomVariableHelper now can handle relative paths (for tests only)

change BoxedPDF Variance calculation now unsupported, fix invalid ReplayFile path now throws exception

implement CalculateVarianceCommand, refactor commands for RandomVariables with new super class AbstractRandomVariableCommand, modify plugin.xml to include new command