Substituted all usage of commons-collections with guava collections
Fix some TODOs related to Guava
Fix PLANNER-200

- Substituted HashMap with Guava's ArrayTable in MrMachine
- Changed relevant import code in MachineReassignmentImporter
- Updated unsolved data
- Sped up calculating possible solution space in AbstractSolutionImporter
Removed Guava version from pom
Fixes formatting issues
Added the isEmptyCollection() method in ConfigUtils, replaced all occurrences
Reverted changes to the MachineReassignment example
Merge pull request #45 from oskopek/PLANNER-209

Replace commons-collections with guava
Replace commons-collections with guava: apply our house style to PR changes
Unignore MachineReassignmentImporterTest
remove guava comment: there is no better collection in guava + use Arrays.asList()
ExhaustiveSearch: processWorkingSolutionDuringMove()
javadoc
ExhaustiveSearch: config
ExhaustiveSearch: startNode.setOptimisticBound()
exhaustive search: Fix depth bugs
exhaustive search: Fix infinite loop
Fix original order bug introduced by guava refactor
WeightFactorySelectionSorterTest
upgrade recipe: Beta1 was released