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.

revert a change to text_setto from 91cf2a84 that caused a subtle regression when a broken object gets retexted.  (It caused the object to be put at the end of the glist, which caused the consequent canvas_restoreconnections call to make a wire connection to the wrong object)