DocShare perm fixed, can read if share permissions (#2171)

frappe/core/doctype/docshare/docshare.py

@@ -19,7 +19,7 @@ class DocShare(Document):
 		self.get_doc().run_method("validate_share", self)
 
 	def cascade_permissions_downwards(self):
-		if self.write:
+		if self.share or self.write:
 			self.read = 1
 
 	def get_doc(self):