Miscellaneous changes to the Asset DB (#390)

* FIX #388: Prevent assets losing supplier data on edit

* FEAT: Add associated assets to supplier detail view

* FIX: Tweak supplier list to make detail view accessible

* Potential fix for #380

No idea if it works because I can't reproduce locally. S/O Reckons it should... :P

* FEAT #386: Asset search searches serial number.

Pending addition of advanced search.

* FIX: Order asset categories/statuses alphabetically

Instead of by pk because that's silly.

* FEAT: Statuses can have a CSS class defined in the admin panel

This replaces the hardcoding of colours in the asset list.

* FIX: Squash migrations

* Fixed supplier not working on all the create asset template

* Refactored away "assets" property on "Supplier" by using "related_name" instead

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

RIGS/views.py

@@ -17,6 +17,7 @@ from django.views.decorators.csrf import csrf_exempt
 
 
 from RIGS import models, forms
+from assets import models as asset_models
 from functools import reduce
 
 """
@@ -248,6 +249,7 @@ class SecureAPIRequest(generic.View):
         'organisation': models.Organisation,
         'profile': models.Profile,
         'event': models.Event,
+        'supplier': asset_models.Supplier
     }
 
     perms = {
@@ -256,6 +258,7 @@ class SecureAPIRequest(generic.View):
         'organisation': 'RIGS.view_organisation',
         'profile': 'RIGS.view_profile',
         'event': None,
+        'supplier': None
     }
 
     '''