Change database settings to use PostgreSQL.

settings.json.collabora

@@ -35,10 +35,14 @@
 
   //The Type of the database. You can choose between dirty, postgres, sqlite and mysql
   //You shouldn't use "dirty" for for anything else than testing or development
-  "dbType" : "dirty",
+  "dbType" : "postgres",
   //the database specific settings
   "dbSettings" : {
-                   "filename" : "var/dirty.db"
+                   "user"     : "etherpad",
+                   "host"     : "localhost",
+                   "password" : "eet4kaeYpoL9Aesh",
+                   "database" : "etherpad",
+                   "charset"  : "utf8mb4"
                  },
 
   /* An Example of MySQL Configuration