Add option to signup from the chromebot

Details

I have added the option of signup from the SUSI Chromebot to SUSI AI.

Screenshots

Layout of the page

After filling all details when you submit the form you get a notification mail,

After confirming you are redirected to the successful signed up page.

Code detail

There is an API endpoint for signing up to SUSI AI-

api.susi.ai/aaa/signup.json?signup=EMAIL&password=PASSWORD

I have made an AJAX request to the endpoint with proper details and with proper validation.

Components

Before we needed to go to the accounts webpage to signup to the SUSI AI but after the recent changes made by me, you can signup through the chrome extension.

Related issue and Pull Request

For issue, click here
For merged Pull Request, click here

Proof of work

My github username is same as my Utopian username so maybe need to submit anythig here!

Thanks!