Change powerconsumption calculation for VM migration
Add new Utils function which checks if a VM has place in a datacenter
Changes in datacenter and utils
Move calculation of VM resources to Utils
Implement priority algorithm within a datacenter, to place a higher
priority virtual machine
Correct a comment
Merge remote-tracking branch 'origin/martin'

Conflicts:
	cloudSimulator/src/main/java/simulation/DataCenter.java
Add junit to pom.xml
Fix warnings