Remove self-hosted title, tagline and description

CloudronManifest.json

@@ -1,9 +1,9 @@
 {
   "id": "io.gogs.cloudronapp",
-  "title": "A self-hosted Git service",
+  "title": "Gogs",
   "author": "Gogs developers",
-  "description": "easiest, fastest and most painless way to set up a self-hosted Git service.\nDefault credentials are administrator:admin123",
-  "tagline": "painless self-hosted Git Service",
+  "description": "Easiest, fastest and most painless Git service.",
+  "tagline": "A painless Git Service",
   "version": "0.1.0",
   "healthCheckPath": "/",
   "httpPort": 3000,