Merge pull request #786 from ahgittin/misc

sensor tidy
Fix AbstractControllerTest

- entity.getChildren() order not guaranteed anymore 
  as being insertion order.
Delete CollectionUtils

- it's a duplicate of guava's Iterables.getLast(Iterable)
move statics to top as per code review
oops repointed webapp example to Tomcat; changing back to JBoss
transient check-in of using TypeToken in Sensor and ConfigKey, and simplified syntax for that