Add authorisation process for sign ups and allow access to EventDetail for basic users (#399)

* CHANGE: First pass at opening up RIGS #233

Whilst it makes it something of a misnomer, the intent is to make the 'view_event' perm a permission to view event details like client/price. I don't see the point in giving everyone 'view_event' and adding a new 'view_event_detail'...Open to arguments the other way.

* CHANGE: New user signups now require admin approval

Given that I intend to reveal much more data to new users this seems necessary...

* CHORE: Fix CI

* FIX: Legacy Profiles are now auto-approved correctly

* Add testing of approval mechanism

This fixes the other functional tests failing because the user cannot login without being approved.

* Superusers bypass approval check

This should fix the remainder of the tests

* Prevent unapproved users logging in through embeds

Test suite doing its job...!

* FIX: Require login on events and event embeds again

Little too far to the open side there Arona... Whooooooops!

* FIX: Use has_oembed decorator for events

* FIX: Re-prevent basic seeing reversion

This is to prevent financials/client data leaking when changed. Hopefully can show them a filtered version in future.

* FIX: Remove mitigation for #264

Someone quietly fixed it, it appears

* FEAT: Add admin email notif when an account is activated and awaiting approval

No async or time-since shenanigans yet!

* FIX: Whoops, undo accidental whitespace change

* FEAT: Add a fifteen min cooldown between emails to admins

Probably not the right way to go about it...but it does work!

TODO: How to handle cooldown-emailing shared mailbox addresses?

* FIX: Remove event modal history deadlink for basic users

Also removes some links on the RIGS homepage that will deadlink for them

* FIX: Wrong perms syntax for history pages

* CHORE: Squash migrations

* FIX: Use a setting for cooldown

* FIX: Minor code improvements

RIGS/templates/RIGS/index.html

@@ -11,7 +11,7 @@
     </div>
     <div class="row">
     <div class="col-sm-{% if perms.RIGS.view_event %}6{% else %}12{% endif %}">
-        
+
         <div class="panel panel-default">
             <div class="panel-heading">
                  <h4 class="list-group-item-heading">Quick Links</h4>
@@ -26,10 +26,11 @@
 
                     <a class="list-group-item" href="https://forum.nottinghamtec.co.uk" target="_blank"><span class="glyphicon glyphicon-link"></span> TEC Forum</a>
                     <a class="list-group-item" href="//members.nottinghamtec.co.uk/wiki" target="_blank"><span class="glyphicon glyphicon-link"></span> TEC Wiki</a>
+                    {% if perms.RIGS.view_event %}
                     <a class="list-group-item" href="http://members.nottinghamtec.co.uk/wiki/images/2/22/Event_Risk_Assesment.pdf" target="_blank"><span class="glyphicon glyphicon-link"></span> Pre-Event Risk Assessment</a>
                     <a class="list-group-item" href="//members.nottinghamtec.co.uk/price" target="_blank"><span class="glyphicon glyphicon-link"></span> Price List</a>
                     <a class="list-group-item" href="https://goo.gl/forms/jdPWov8PCNPoXtbn2" target="_blank"><span class="glyphicon glyphicon-link"></span> Subhire Insurance Form</a>
-                
+                    {% endif %}
             </div>
         </div>
 
@@ -73,7 +74,7 @@
     </div>
     {% if perms.RIGS.view_event %}
     <div class="col-sm-6">
-        {% include 'RIGS/activity_feed.html' %}    
+        {% include 'RIGS/activity_feed.html' %}
     </div>
     {% endif %}
 </div>