refactor: refactor for modern layout

- split frontend and backend.
- update backend with modern Python dev strategies.

frontend/static/js/page/login.js

@@ -0,0 +1,58 @@
+$(document).ready(function() {
+    ccn_pages_currentPage = ccn_pages_enumPages.login;
+
+    // template process
+    ccn_template_Load();
+    
+    // nav process
+    ccn_headerNav_Insert();
+    ccn_headerNav_BindEvents();
+    ccn_headerNav_LoggedRefresh();
+
+    // messagebox process
+    ccn_messagebox_Insert();
+    ccn_messagebox_BindEvent();
+
+    // apply i18n
+    ccn_i18n_LoadLanguage();
+    ccn_i18n_ApplyLanguage();
+
+    // bind login event
+    $("#ccn-login-form-login").click(ccn_login_startLogin);
+});
+
+function ccn_login_startLogin() {
+    // disable all ui first
+    $("#ccn-login-form-login").attr("disabled",true);
+    $("#ccn-login-form-username").attr("disabled",true);
+    $("#ccn-login-form-password").attr("disabled",true);
+
+    // get form data
+    username = $("#ccn-login-form-username").val();
+    password = $("#ccn-login-form-password").val();
+
+    /*
+    // try get salt
+    if (ccn_api_common_salt(username)) {
+        // continue login
+        if (ccn_api_common_login(username, password)) {
+            // ok, logged
+            // jump into home page again
+            window.location.href = '/web/home';
+
+        } else ccn_messagebox_Show($.i18n.prop("ccn-i18n-js-fail-login"));
+    } else ccn_messagebox_Show($.i18n.prop("ccn-i18n-js-fail-login"));
+    */
+   if (ccn_api_common_webLogin(username, password)) {
+        // ok, logged
+        // jump into home page again
+        window.location.href = '/web/home';
+        return;
+
+    } else ccn_messagebox_Show($.i18n.prop("ccn-i18n-js-fail-login"));
+
+    // retore ui
+    $("#ccn-login-form-login").removeAttr("disabled");
+    $("#ccn-login-form-username").removeAttr("disabled");
+    $("#ccn-login-form-password").removeAttr("disabled");
+}