Add Loader Component

[bodhisha]

[aitikgupta]

Reopening this as a request:
Currently if anything goes wrong with the server, the loading blocks any routing.
If we delete a user from the database, and we try to load the main page again, it'll ultimately get stuck on loading and we can't click on other buttons. If there's a fix for it we can use this, otherwise @bodhisha you can close this.