Update plugins to work with Maven 3.1
Update clover plugin 3.1.10.1 -> 3.2.2
Update testing dependencies

TestNG 6.8.7 -> 6.8.8
Commons Lang 3.1 -> 3.3
Update findbugs 2.5 -> 2.5.3
Update fluido-skin 1.3.0 -> 1.3.1