Email verifycation template is not styled

[humitos]

It seems we are using a default allauth template. This one in particular: https://github.com/pennersr/django-allauth/blob/301324e3ed2bf7c95987f24625ee8ebd7480ce85/allauth/templates/account/verification_sent.html

I think we want to override them to:

• Add an email icon (similar to our "Verify email" template shown when the user clicks the link from the email):

  ext-theme/readthedocsext/theme/templates/account/email_confirm.html

  Lines 10 to 13 in 790e59d

  	<h1 class="ui medium header">
  	<i class="fad fa-envelope icon"></i>
  	{% trans "Verify email" %}
  	</h1>

• Don't use title case

[humitos]

Our looks like:

[agjohnson]

You know, I have noticed a lot of regressions on allauth templates that look like this too. I wonder if we lost something in an upgrade. I know this is just a missing template that needs added, but I've seen this fairly broken styling on a number of allauth views lately.

I opened up #462 to investigate. Maybe I'm wrong though.

[agjohnson]

Just a note, on the examples above, the first template is missing, the second template is the one that users see after clicking the email verification email they are sent, so is a separate template.