Add load compatibility tests for versions 15.1.1.3 and 18.1.3Merged revision(s) 2119 from DamClients/DamUI/branches/DamUI 18.1:Related to Issue [MWDAM-1430]
Added validation of Id's before XML serializationAdded tests for XML serialization for projects with correct/incorrect Id'sMinor fixed in DataPluginImporterRelated to Issue [MWDAM-1340]
Made sure HeadPl3 and HeadPl4 for scenario's are only used when they actually contain a value. So from now on, when HeadPl3 (and/or HeadPl4) are NOT defined in the scenarios.csv, it stays nil. For the Design calculations, this means that the location.HeadPl3 is used when scenario.HeadPl3 = nil. Related to Issue [MWDAM-1406]