add account deletion

app/templates/users/delete_confirm.html

@@ -0,0 +1,20 @@
+{%- from 'common/macros.html' import subheader -%}
+{%- extends 'base.html' -%}
+{%- block title -%}account deletion confirmation{%- endblock -%}
+{%- block content -%}
+{%- set sub -%}
+<a href="{{url_for('users.settings', username=get_active_user().username)}}">&larr; Back to settings</a>
+{%- endset -%}
+{{- subheader('Confirm account deletion', sub) -}}
+<div class="plank">
+  <form class="full-width" method="POST">
+    <p>Are you sure you want to delete your account on {{ config.SITE_NAME }}? <strong>This action is irreversible.</strong> Your posts and threads will remain accessible to preserve history but will be de-personalized, showing up as authored by a system user. Posts that @mention you will also mention the system user instead.</p>
+    <p>If you wish for any and all content relating to you to be removed, you will have to <a href="{{url_for('guides.contact')}}" target="_blank">contact {{ config.SITE_NAME }}'s administrators separately.</a></p>
+    <p>If you are sure, please confirm your current password below.</p>
+    <label for="password">Confirm password</label>
+    {{csrf_input() | safe}}
+    <input type="password" id="password" name="password" required autocomplete="current-password">
+    <input type="submit" class="critical" value="Permanently delete account">
+  </form>
+</div>
+{%- endblock -%}

app/templates/users/settings.html

@@ -77,4 +77,8 @@
   <div>If badges fail to load, make sure JS is enabled.</div>
 </fieldset>
 {%- endif -%}
+<fieldset class="plank">
+  <legend>Disown & Delete account</legend>
+  <a class="linkbutton critical" href="{{url_for('users.delete_confirm', username=user.username)}}">Delete account</a>
+</fieldset>
 {%- endblock -%}

app/templates/users/user_page.html

@@ -70,10 +70,12 @@
       {%- endfor -%}
     </div>
     {%- endif -%}
+    {#
     <fieldset class="plank secondary-bg minimal even no-shadow">
       <legend>About me</legend>
       <p>stub</p>
     </fieldset>
+    #}
     {%- if target_user.signature_rendered -%}
     <fieldset class="plank secondary-bg minimal even no-shadow">
       <legend>Signature</legend>