Servers: Add new system messages.

src/routes/servers/member_remove.rs

@@ -25,5 +25,5 @@ pub async fn req(user: User, target: Ref, member: String) -> Result<()> {
         return Err(Error::MissingPermission);
     }
 
-    target.remove_member(&member.id.user).await
+    target.remove_member(&member.id.user, RemoveMember::Kick).await
 }