Merge branch 'vali-date' into staging

app/models/metadata_document_date.rb

@@ -8,6 +8,8 @@ class MetadataDocumentDate < MetadataTemplate
   end
 
   def value_from_document
+    return nil unless document.path
+
     document.date
   end
 
@@ -46,7 +48,7 @@ class MetadataDocumentDate < MetadataTemplate
           value_from_document || default_value
         end
       else
-        value_from_document || default_value
+        self[:value] || value_from_document || default_value
       end
   end