added javadocs to core.algorithm.state.StateManager
moved tw-update from core.algorithm.state.StateManager to core.algorithm.io.VehicleRoutingAlgorithms
added core.problem.JobActivityFactory to InsertionCalculators
replaced old TimeWindowUpdater with new one
rename core.problem.JobActivityFactory.createActivity to .createActivities
modified core.problem.VehicleRoutingProblem.copyAndGetActivities such that it returns an empty list if no activities to copy
misc