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.

remove reference to tofront/back menu items accidentally left in after 8ae59437

fix for #133: chromium phones home to google about stuff. The ipv6 blackhole addy would be a better solution but apparently Chromium doesn't accept ipv6 addresses for the --proxy-server flag

fix Bring to Front/Send to Back by putting them in the popup menu. It would be better if the user could select multiple objects at a time, but the x/y coord-based implementation doesn't allow for that.

fix regression where glist_select can send messages to the GUI before the window or its elements actually exist. (Same thing happens in Vanilla, but tcl/tk silently ignores tk canvas itemconfigure messages for non-existent objects)

fix #114: can't copy-paste ASCII character 160, non-breaking space. Now we only remove consecutive \u0020, and leave the non-breaking spaces alone

fix #119: store canvas title for later use. This will properly display the title for a dirty canvas in the case where the Pd patch is mutated with a loadbang (and properly other cases, too)

Remove kludge for menu popup position. As of nw.js v.0.16.1, it appears that the popup menu behaves correctly with zooming and scaling

These happen in Pd-Vanilla and Pd-l2ork, too. They happen when an iemgui is inside
a gop window and outside of the gop rectangle area-- Pd still forwards gui
messages for them.