Fix assorted issues found by FindBugs.
Merge remote-tracking branch 'origin/master' into find-bugs

Conflicts:
	src/org/ggp/base/apps/kiosk/Kiosk.java
	src/org/ggp/base/apps/kiosk/games/ConnectFourCanvas.java
	src/org/ggp/base/apps/kiosk/games/GoldenRectangleCanvas.java
	src/org/ggp/base/apps/tiltyard/TiltyardRequestFarm.java
	src/org/ggp/base/apps/tiltyard/TiltyardRequestFarm_Test.java
	src/org/ggp/base/util/game/LocalGameRepository.java
	src/org/ggp/base/util/presence/PlayerPresenceManager.java
Merge branch 'master' of https://github.com/ggp-org/ggp-base into find-bugs
Merge pull request #34 from ggp-org/find-bugs

Fix assorted issues found by FindBugs.