Add Change Password UI

[nilaymaj]

Add a button to the profile page for changing the password. Clicking this button should send a request to the reset password email route on the backend, and show a message saying a mail has been sent for changing password. You can add a confirmation alert dialog on clicking the button if you want.

The screen for setting the new password will be almost the same as the one for setting password for the first time, so no need to make that screen separately. Just add the button to the profile page.