Fix : signup page form validation

[ShinichiShi]

hey @Sahil-Gupta584 i would like to contribute to this project by

• adding a validation check at the frontend of signup page...
• also adding favicon to the website

Kindly assign this issue to me under hacktoberfest label, so that i can raise my PR soon

[Vipul-Vermaa]

@Sahil-Gupta584 Can u assign this one to me?