add localdb template,

update paasldap backend interface

src/backends/backends.js

@@ -77,5 +77,16 @@ export class DB_BACKEND extends BACKEND {
  * Interface for user auth backends.
  */
 export class AUTH_BACKEND extends BACKEND {
-	modUser (username, attributes, params = null) {}
+	addUser (username, attributes, params = null) {}
+	getUser (username, params=null) {}
+	setUser (username, attributes, params = null) {}
+	deluser (username, params = null) {}
+
+	addGroup (groupname, attributes, params = null) {}
+	getGroup (groupname, params=null) {}
+	setGroup (groupname, attributes, params = null) {}
+	delGroup (groupname, params = null) {}
+
+	addUserToGrou (username, groupname, params = null) {}
+	delUserFromGroup (username, groupname, params = null) {}
 }