Improve Message#isEmpty()

Also see having empty strings in a message as empty

pom.xml

@@ -26,7 +26,6 @@
 			<version>1.8-R0.1-SNAPSHOT</version>
 			<type>jar</type>
 			<scope>provided</scope>
-			<optional>true</optional>
 		</dependency>
 
 		<!-- Google Gson, only used for the tests -->
@@ -74,7 +73,7 @@
 			</build>
 		</profile>
 
-		<!-- Produce javadoc files, activate by using -Djavadoc -->
+		<!-- Produce javadoc files, activate by using -Djavadoc=path/to/directory -->
 		<profile>
 			<id>generate-javadoc</id>
 			<activation>

src/main/java/me/wiefferink/interactivemessenger/processing/Message.java

@@ -201,7 +201,12 @@ public class Message {
 	 * @return true if the message is empty, otherwise false
 	 */
 	public boolean isEmpty() {
-		return message.isEmpty();
+		for(String part : message) {
+			if(!part.isEmpty()) {
+				return false;
+			}
+		}
+		return true;
 	}
 
 	/**