Add assets test suite (#400)

* Started POM and assets test

* FEAT: Adapt unit tests from RIGS to assets

* CHORE: pep8...

* Added Asset Create and Edit forms

* Add non-cable asset creation test

* CHORE: Frickin pep8...

* Add cable asset creation test

* Basic asset create validation testing

* Asset edit tests are here

A bit dodgy in places but par for the course for me :P

* Add access level tests

* Delete unused code

Much less effort way to increase coverage stats :D

* Add delete sample data test for completeness

Chasing that sweet 100% coverage...

* Add supplier list page + tests

Also fix the supplier page not being ordered alphabetically

* Helps if I add the migration...

* Add supplier create/edit tests

* Asset duplicate tests

Also fixed some random bugs

* Asset search tests

* 404 tests and test that everything requires authentication

* Test visibility of form errors

And fix supplier form not displaying errors correctly!

* Fix broken search test


Co-authored-by: Matthew Smith <mattysmith22@googlemail.com>

assets/templates/partials/purchasedetails_form.html

@@ -1,5 +1,4 @@
 {% load widget_tweaks %}
-{% load asset_templatetags %}
 {% load static %}
 
 
@@ -23,7 +22,7 @@
   </div>
   <div class="panel-body">
     {% if create or edit or duplicate %}
-    <div class="form-group">
+    <div class="form-group" id="purchased-from-group">
       <label for="{{ form.purchased_from.id_for_label }}">Supplier</label>
       <select id="{{ form.purchased_from.id_for_label }}" name="{{ form.purchased_from.name }}" class="form-control selectpicker" data-live-search="true" data-sourceurl="{% url 'api_secure' model='supplier' %}">
         {% if object.purchased_from %}