Merge branch 'fix_blank_imap_body' into 'master'

Fix messages with blank bodies not showing up on iphone

See merge request !449

exec/imapservice.js

@@ -247,8 +247,8 @@ function send_fetch_response(msgnum, fmat, uid)
 	function get_rfc822_text() {
 		if(rfc822.text==undefined)
 			rfc822.text=base.get_msg_body(msgnum, true, true, true);
-		if(rfc822.text==undefined)
-			rfc822.text='';
+		if(rfc822.text === "" || rfc822.text==undefined)
+			rfc822.text='No body here';
 	}
 
 	function get_rfc822() {