Add new front page with boxes and thing types tree

- Replace simple HTML index with full template
- Add grid of all boxes with details and item counts
- Add expandable tree view of thing types using MPTT
- Add 'mptt' to INSTALLED_APPS for recursetree tag
- Add jQuery for tree toggle functionality

Bump container version to 0.027

boxes/views.py

@@ -6,9 +6,13 @@ from .models import Box, Thing, ThingType
 
 
 def index(request):
-    """Simple index page."""
-    html = '<h1>LabHelper</h1><p><a href="/search/">Search Things</a> | <a href="/admin/">Admin</a></p>'
-    return HttpResponse(html)
+    """Home page with boxes and thing types."""
+    boxes = Box.objects.select_related('box_type').all().order_by('id')
+    thing_types = ThingType.objects.all()
+    return render(request, 'boxes/index.html', {
+        'boxes': boxes,
+        'thing_types': thing_types,
+    })
 
 
 def box_detail(request, box_id):