implemented LE and ACME and fixed some bugs

backend/config/providers/autodns.json

@@ -1,5 +1,6 @@
 {
   "enabled": false,
+  "acme_ready": false,
   "settings": {
     "password": "test",
     "username": "test"

backend/config/providers/certigo-acmeproxy.json

@@ -0,0 +1,7 @@
+{
+  "enabled": true,
+  "acme_ready": true,
+  "settings": {
+    "baseURL": "http://openmailserver.de:8080"
+  }
+}

backend/config/providers/dummy-ca.json

@@ -1,4 +1,5 @@
 {
   "enabled": true,
+  "acme_ready": false,
   "settings": {}
 }

backend/config/providers/hetzner.json

@@ -1,4 +1,5 @@
 {
   "enabled": false,
+  "acme_ready": false,
   "settings": {}
 }