Create setPan at svg-editor.js to let move the document without pressing any key or mouse button. Usefull for future tablet/mobile edition

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2331 eee81c28-f429-11dd-99c0-75d572ba1ddd

editor/svg-editor.js

@@ -2055,6 +2055,10 @@
 						workarea.css('cursor', zoomInIcon);
 					}
 				})
+                                
+                                Editor.setPan = function(active) {
+                                        svgCanvas.spaceKey = keypan = active;
+                                }
 			}());