Fix performance don't make any app that has a standard bookmarks menu (e.g. konsole, kate, konversation, or any KDE app that opened a file dialog with file dialog menu on) keep track of Konqueror's bookmarks file (as in load it into memory, and reload it every time it changes).

Should make things a bit more bearable for those with an impressive number of bookmarks, though it doesn't fix the issue entirely.