Make webhook api links https

Fixes #5

local.py

@@ -6,6 +6,7 @@ ADMIN_MEDIA_PREFIX = "https://##APP_DOMAIN##/static/admin/"
 SITES["front"]["scheme"] = "https"
 SITES["front"]["domain"] = "##APP_DOMAIN##"
 SITES["api"]["domain"] = "##APP_DOMAIN##"
+SITES["api"]["scheme"] = "https"
 
 SECRET_KEY = "theveryultratopsecretkey"
 
@@ -36,4 +37,4 @@ DATABASES = {
     }
 }
 
-WEBHOOKS_ENABLED = True
+WEBHOOKS_ENABLED = True