Added optional configuration "links.blog.url". Task #14032

src/main/java/de/thm/arsnova/controller/ConfigurationController.java

@@ -61,6 +61,9 @@ public class ConfigurationController extends AbstractController {
 
 	@Value("${links.imprint.url}")
 	private String imprintUrl;
+	
+	@Value("${links.blog.url:}")
+	private String blogUrl;
 
 	@Value("${links.privacy-policy.url}")
 	private String privacyPolicyUrl;
@@ -117,7 +120,10 @@ public class ConfigurationController extends AbstractController {
 		if (!"".equals(documentationUrl)) {
 			config.put("documentationUrl", documentationUrl);
 		}
-		if (!"".equals(presenterDocumentationUrl)) {
+		if (!"".equals(blogUrl)) {
+			config.put("blogUrl", blogUrl);
+		}
+ 		if (!"".equals(presenterDocumentationUrl)) {
 			config.put("presenterDocumentationUrl", presenterDocumentationUrl);
 		}
 		if (!"".equals(overlayUrl)) {

src/main/resources/arsnova.properties.example

@@ -193,6 +193,7 @@ question.parse-answer-option-formatting=false
 
 # Links which are displayed in the frontend applications
 #
+links.blog.url=https://arsnova.eu/blog/
 links.documentation.url=https://arsnova.eu/manual/
 links.presenter-documentation.url=
 links.overlay.url=https://arsnova.eu/overlay/