created DatabaseConnection.java, put this into Table.java, deleted duplicate code from closeConnection in all Table subclasses
resolved checkstyle conflicts in DatabaseConnection.java
added some javadocs and comments to GameTable.java
deleted method in Database.java
Merge branch 'refdatabase' of github.com:duke-compsci308-spring2013/vooga into arcade
added empty methods to ScoreTable.java
Merge branch 'arcade' of github.com:duke-compsci308-spring2013/vooga into arcade
added support for getting scores based on username, based on game, and based on username and game
Merge branch 'arcade' of github.com:duke-compsci308-spring2013/vooga into arcade