add a fail over that chooses the first generator when none is applicable

This should always give players the first generator that was setup in
the config.yml when the generator has no permissions on it and unlock
level set to 0.

Closes #42

src/main/java/xyz/spaceio/customoregen/CustomOreGen.java

@@ -230,13 +230,14 @@ public class CustomOreGen extends JavaPlugin {
 	 * @return				the generator config
 	 */
 	public GeneratorConfig getGeneratorConfigForPlayer(OfflinePlayer offlinePlayer, String world) {
+		
 		GeneratorConfig gc = null;
 		int id = 0;
+		
 		if (offlinePlayer == null) {
 			gc = generatorConfigs.get(0);
 			cacheOreGen(offlinePlayer.getUniqueId(), id);
 		} else {
-
 			int islandLevel = getLevel(offlinePlayer.getUniqueId(), world);
 			if (offlinePlayer.isOnline()) {
 				Player realP = offlinePlayer.getPlayer();
@@ -259,9 +260,19 @@ public class CustomOreGen extends JavaPlugin {
 				gc = getCachedGeneratorConfig(offlinePlayer.getUniqueId());
 			}
 		}
+		
 		if (id > 0) {
 			cacheOreGen(offlinePlayer.getUniqueId(), id - 1);
 		}
+		
+		// fail over if there wasn't found any applicable generator but still no permission and level 0
+		if (gc == null && generatorConfigs.get(0) != null 
+				&& (generatorConfigs.get(0).permission == ";" || generatorConfigs.get(0).permission == "" || generatorConfigs.get(0).permission.length() == 0)
+				&& generatorConfigs.get(0).unlock_islandLevel == 0) {
+			
+			gc = generatorConfigs.get(0);
+		}
+		
 		return gc;
 	}