Rename Exception package to conform with naming conventions

* Rename exception package
* Add logger call
* Remove unused Gui class

Author: MarkNBroadhead

src/main/java/app/App.java

@@ -1,6 +1,6 @@
 package app;
 
-import app.Exception.ConfigException;
+import app.exception.ConfigException;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -115,6 +115,7 @@ public static void main(String[] args) {
     }
 
     private void onCancel() {
+        LOGGER.info("Exiting, cancel called.");
         dispose();
     }
 

src/main/java/app/Config.java

@@ -1,6 +1,6 @@
 package app;
 
-import app.Exception.ConfigException;
+import app.exception.ConfigException;
 import com.esotericsoftware.yamlbeans.YamlException;
 import com.esotericsoftware.yamlbeans.YamlReader;
 import com.esotericsoftware.yamlbeans.YamlWriter;

src/main/java/app/Exception/ConfigException.java

@@ -1,4 +1,4 @@
-package app.Exception;
+package app.exception;
 
 public class ConfigException extends Exception {
 

src/main/java/app/Gui.form

@@ -1,6 +1,6 @@
 package app;
 
-import app.Exception.ConfigException;
+import app.exception.ConfigException;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 

src/main/java/app/Gui.java

@@ -0,0 +1,16 @@
+package app.exception;
+
+public class ConfigException extends Exception {
+
+    public ConfigException(String message) {
+        super(message);
+    }
+
+    public ConfigException(String message, Exception ex) {
+        super(message, ex);
+    }
+
+    public ConfigException(Exception ex) {
+        super(ex);
+    }
+}