+* Change all id to i64
* Try using WASM for all the client logic (test on signup page)
* Describe the use cases.
* Define the UI (mockups).
* Two CSS: one for desktop and one for mobile
* Define the logic behind each page and action.
+* Add support to language into db model.
[ok] Check cookie lifetime -> Session by default
[ok] Asynchonous email sending and database requests