minor fixes and improvements
changed regex for new partition name
new toString() in PartitionNode
parsing hierarchical partitions
fixed NullPointerException
parsing test cases with hierarchical models
cleanup
remove pretty formatting to preserve whitespaces
cleanup
cleanup
getLeafPartitionNames()
getLeafPartitionNamesTest()
Changed toString() to display qualified name of condition
parsing statements with hirarchical model
adapting Statement edit for hierarchical models
adapted test for hierarchical model in constraints
added helper function to get names of all partitions in hierarchy
fix to constraint all partitions in hierarchy
removed PartitionSettingsDialog
fixed toString()