Extracted document filesystem serving into a separate app, see docs/Changelog.txt to update database accordingly

apps/filesystem_serving/models.py

@@ -0,0 +1,18 @@
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
+from documents.models import Document, MetadataIndex
+
+
+class DocumentMetadataIndex(models.Model):
+    document = models.ForeignKey(Document, verbose_name=_(u'document'))
+    metadata_index = models.ForeignKey(MetadataIndex, verbose_name=_(u'metadata index'))
+    filename = models.CharField(max_length=255, verbose_name=_(u'filename'))
+    suffix = models.PositiveIntegerField(default=0, verbose_name=_(u'suffix'))
+
+    def __unicode__(self):
+        return unicode(self.filename)
+
+    class Meta:
+        verbose_name = _(u'document metadata index')
+        verbose_name_plural = _(u'document metadata indexes')