Add a check that a toc entry actually exists before adding it. Added DISIS and Gem entries back to the toc.

handle negative coordinates for pd META regex, add doc/* directory search trigger, various refactoring

change id to the document's full path-- this will make it easier to fetch specific documents from the index when displaying directory contents

wait for console window to finish loading before initializing the GUI. This ensures, for example, that our dejavu css font is loaded and ready before doing font metrics.