update to use guava 13 instead of old google collections
record the last 10 job-runs that awarded points to the user

we record the last 10 runs that have resulted in increasing or decreasing the user's score. This way the user has a way to see where his points come from are where the went
Unit-Test the newly added capabilities
more tests and refinements on code along the way
removed find bugs warning
Merge branch 'refs/heads/master' into feature/keep-most-recent-score-award-history

Conflicts:
	pom.xml
fix the tests
order multiple runs per score-award in revers order (newest first)
ui improvement: separate by space
move everything to the summary instead of the config page

… looks way nicer
upgrade jenkins dependency to try to fix the build
Merge pull request #7 from simschla/feature/keep-most-recent-score-award-history

keep most recent score award history