Remove the ‘manage templates’ page

The ‘manage templates’ page was almost identical to the ‘send text messages’
page.

This commit consolidates them into one and makes them all hang together.

Part of this means tweaks to the javascript so that files upload as soon as
you’ve chosen them.

app/templates/views/invite-user.html

@@ -18,7 +18,7 @@ Manage users – GOV.UK Notify
 
       {% if user %}
         <p class='bottom-gutter'>
-          {{ user.email_localpart }}@digital.cabinet-office.gov.uk
+          {{ current_user.email_address }}
         </p>
       {% else %}
         {{ textbox(form.email_address, hint='Email address must end in .gov.uk', width='1-1') }}
@@ -37,7 +37,9 @@ Manage users – GOV.UK Notify
         {{ page_footer(
           'Save',
           delete_link=url_for('.delete_user', service_id=service_id, user_id=user_id),
-          delete_link_text='delete this account'
+          delete_link_text='Delete this account',
+          back_link=url_for('.manage_users', service_id=service_id),
+          back_link_text='Cancel'
         ) }}
       {% else %}
         {{ page_footer('Send invitation email') }}