add account edit (settings) routes

* Added account_url filter to jinja2 environment. This produces a path
  to the user's account url (/account/{username}).
* Updated archdev-navbar to link to new edit route.
+ Added migrate_cookies(request, response) to aurweb.util, a function
  that simply migrates the request cookies to response and returns it.
+ Added account_edit tests to test_accounts_routes.py.

Signed-off-by: Kevin Morris <kevr@0cost.org>

templates/partials/account_form.html

@@ -42,6 +42,15 @@
             "account is inactive." | tr }}</em>
         </p>
 
+        <p>
+            <label for="id_inactive">{% trans %}Inactive{% endtrans %}:</label>
+            <input id="id_inactive" type="checkbox" name="J"
+               {% if inactive %}
+                   checked="checked"
+               {% endif %}
+            >
+        </p>
+
         {% if request.user.has_credential("CRED_ACCOUNT_CHANGE_TYPE") %}
 		<p>
             <label for="id_type">