[REF] web: Update generic files

General cleaning of some helpers and generic files. The idea is that they are
less likely to be entirely re-written in the near future so this is a way to
keep the code clean, readable and compliant to the current standards. Changes include:
- Use of async/await when possible
- Use of const/let instead of var
- Removal of underscore.js
- Use of native JS instead of jQuery when possible

The logic of the affected code remains the same.

1 files changed, 1 insertions, 0 deletions

diff --git a/addons/web/static/src/js/main.js b/addons/web/static/src/js/main.js
index 35f00254ba8..49b90228ba2 100644
--- a/addons/web/static/src/js/main.js
+++ b/addons/web/static/src/js/main.js
@@ -1,4 +1,5 @@
 odoo.define('web.web_client', function (require) {
+    "use strict";
 
     const env = require('web.env');
     const session = require("web.session");