Merge branch '13-fix-localization-messages' into 'development'

Fix issue of localization messages not being found

Closes #13

See merge request !11

src/main/java/nl/tudelft/ewi/walkytalky/configuration/LocaleConfiguration.java

 package nl.tudelft.ewi.walkytalky.configuration;
 
+import org.springframework.context.MessageSource;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.ResourceBundleMessageSource;
 import org.springframework.web.servlet.LocaleResolver;
 import org.springframework.web.servlet.i18n.CookieLocaleResolver;
 import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
@@ -15,6 +17,21 @@ import java.util.Locale;
  */
 @Configuration
 public class LocaleConfiguration {
+	/**
+	 * Bean used to resolve the messages for the current locale.
+	 *
+	 * @return The {@link MessageSource} bean.
+	 */
+	@Bean(name = "messageSource")
+	public MessageSource messageSource() {
+		ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
+		messageSource.setBasename("messages");
+		messageSource.setFallbackToSystemLocale(false);
+		messageSource.setCacheSeconds(0);
+		messageSource.setDefaultEncoding("UTF-8");
+		return messageSource;
+	}
+
 	/**
 	 * Bean used to resolve the locale for a certain request.
 	 * This resolver currently uses a {@link SessionLocaleResolver} that