Read-only files are not recognized
Submitted by Chunyang Xu
Created attachment 269268 latex and gedit try to modify same read-only file (window title)
It seems that window's title should update when open read-only file.
In src/main_window.vala line 842: active_document.readonly ? " [" + _("Read-Only") + "]" : "" want to add "[Read-Only]" to window's title (like gedit), but it not work