Improved Config machanism with ConfigItems

Added logger levels and home directory to Config

src/main/java/envoy/client/ui/Startup.java

@@ -61,6 +61,9 @@ public class Startup {
 			System.exit(1);
 			e.printStackTrace();
 		}
+		
+		EnvoyLog.setFileLevelBarrier(Config.getInstance().getFileLevelBarrier());
+		EnvoyLog.setConsoleLevelBarrier(Config.getInstance().getConsoleLevelBarrier());
 
 		// Ask the user for their user name
 		String userName = JOptionPane.showInputDialog("Please enter your username");