Adding GUI update feature (server-side)

server/frontend/app/blueprints/update.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from flask import jsonify, Blueprint
+from app.classes.update import Update
+
+update_bp = Blueprint("update", __name__)
+
+
+@update_bp.route("/check", methods=["GET"])
+def check():
+    """ Check the presence of new version """
+    return jsonify(Update().check_version())
+
+
+@update_bp.route("/process", methods=["GET"])
+def process():
+    """ Check the presence of new version """
+    return jsonify(Update().update_instance())