Fix some /home errors with invalid data.

Author: khobbits

Essentials/src/com/earth2me/essentials/EssentialsConf.java

@@ -405,7 +405,8 @@ public boolean hasProperty(final String path)
 
 	public Location getLocation(final String path, final Server server) throws InvalidWorldException
 	{
-		final String worldName = getString((path == null ? "" : path + ".") + "world");
+		final String worldString = (path == null ? "" : path + ".") + "world";
+		final String worldName = getString(worldString);
 		if (worldName == null || worldName.isEmpty())
 		{
 			return null;

Essentials/src/com/earth2me/essentials/UserData.java

@@ -142,6 +142,9 @@ private String getHomeName(String search)
 			catch (NumberFormatException e)
 			{
 			}
+			catch (IndexOutOfBoundsException e)
+			{
+			}
 		}
 		return search;
 	}

Essentials/src/com/earth2me/essentials/commands/Commandhome.java

@@ -109,7 +109,11 @@ private String getHomeLimit(final User player)
 	}
 
 	private void goHome(final User user, final User player, final String home, final Trade charge) throws Exception
-	{
+	{		
+		if (home.length() < 1)
+		{
+			throw new NotEnoughArgumentsException();
+		}
 		final Location loc = player.getHome(home);
 		if (loc == null)
 		{