Fetch defaults in purchase common and sales common related doctypes and fix minor utf-8 issues

erpnext/setup/doctype/email_digest/email_digest.py

@@ -763,7 +763,7 @@ def send():
 	"""
 	edigest_list = webnotes.conn.sql("""
 		SELECT name FROM `tabEmail Digest`
-		WHERE enabled=1
+		WHERE enabled=1 and docstatus<2
 	""", as_list=1)
 
 	from webnotes.model.code import get_obj

erpnext/setup/doctype/price_list/price_list.py

@@ -85,8 +85,9 @@ class DocType:
 		  
 		from webnotes.utils import file_manager
 		fn, content = file_manager.get_file(fid)
-		
-		if not type(content) == str:
+	
+		# NOTE: Don't know why this condition exists
+		if not isinstance(content, basestring) and hasattr(content, 'tostring'):
 		  content = content.tostring()
 
-		return content	
+		return content	

erpnext/setup/doctype/upload_accounts_transactions/upload_accounts_transactions.py

@@ -96,8 +96,9 @@ class DocType:
 
 		from webnotes.utils import file_manager
 		fn, content = file_manager.get_file(fid)
-
-		if not type(content) == str:
+		
+		# NOTE: Don't know why this condition exists
+		if not isinstance(content, basestring) and hasattr(content, 'tostring'):
 		  content = content.tostring()
 
 		return content