check that content exists before adding it to getAllDocs.

causing error which I think is blowing up the mongo driver elsewhere

services/web/app/coffee/Features/Project/ProjectEntityHandler.coffee

@@ -48,6 +48,7 @@ module.exports = ProjectEntityHandler =
 				for folderPath, folder of folders
 					for doc in folder.docs
 						content = docContents[doc._id.toString()]
+						if content?
 							docs[path.join(folderPath, doc.name)] = {
 								_id:   doc._id
 								name:  doc.name