message.rs: Remove whitespaces around msg parts

This removes the leading and trailing whitespaces of each messages'
parts as we want a consistent spacing between the quotes and the rest
of the messages. Thus the spacing between a quote and a text separated
by many line returns and none will be the same.

fractal-gtk/src/widgets/message.rs

@@ -675,7 +675,7 @@ fn split_msg(body: &str) -> Vec<(String, MsgPartType)> {
         let v: Vec<&str> = group
             .map(|l| l.trim_left_matches(">").trim_left())
             .collect();
-        let s = v.join("\n").to_string();
+        let s = v.join("\n").trim().to_string();
         parts.push((s, k));
     }