Set mail using localhost & added mail template in kustvakt config.

Change-Id: I41eea78cf1fb19b44f46411e25ecb27b52c74982
diff --git a/full/src/test/java/de/ids_mannheim/korap/web/controller/UserGroupControllerTest.java b/full/src/test/java/de/ids_mannheim/korap/web/controller/UserGroupControllerTest.java
index be39d02..c907338 100644
--- a/full/src/test/java/de/ids_mannheim/korap/web/controller/UserGroupControllerTest.java
+++ b/full/src/test/java/de/ids_mannheim/korap/web/controller/UserGroupControllerTest.java
@@ -472,7 +472,6 @@
                                 "pass"))
                 .entity(userGroup).post(ClientResponse.class);
 
-        String entity = response.getEntity(String.class);
         assertEquals(Status.OK.getStatusCode(), response.getStatus());
 
         // check member
diff --git a/full/src/test/resources/kustvakt-test.conf b/full/src/test/resources/kustvakt-test.conf
index aa76a83..ca6b233 100644
--- a/full/src/test/resources/kustvakt-test.conf
+++ b/full/src/test/resources/kustvakt-test.conf
@@ -10,15 +10,18 @@
 ldap.config = file-path-to-ldap-config
 
 # Kustvakt
-## mail settings
-mail.enabled = false
-mail.receiver = test-email
-mail.sender = noreply@ids-mannheim.de
-
 ## server
 server.port=8089
 server.host=localhost
 
+## mail settings
+mail.enabled = false
+mail.receiver = test@localhost
+mail.sender = noreply@ids-mannheim.de
+
+## mail.templates
+template.group.invitation = notification.vm
+
 ## default layers
 default.layer.p = tt
 default.layer.l = tt