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

Change-Id: I41eea78cf1fb19b44f46411e25ecb27b52c74982
diff --git a/full/src/main/resources/kustvakt.conf b/full/src/main/resources/kustvakt.conf
index edb1bce..d737a06 100644
--- a/full/src/main/resources/kustvakt.conf
+++ b/full/src/main/resources/kustvakt.conf
@@ -16,9 +16,12 @@
 
 ## mail settings
 mail.enabled = false
-mail.receiver = test-email
+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