Added simple statistics page (total used storage, total docs, etc)

apps/ocr/statistics.py

@@ -0,0 +1,16 @@
+from django.utils.translation import ugettext as _
+
+
+from models import DocumentQueue, QueueDocument
+
+
+def get_statistics():
+    paragraphs = [
+        _(u'Document queues: %d') % DocumentQueue.objects.count(),
+        _(u'Queued documents: %d') % QueueDocument.objects.only('pk').count()
+    ]
+    
+    return {
+        'title':_(u'OCR statistics'),
+        'paragraphs': paragraphs
+    }