Include window events in event-palette

Previously these weren't displayed since event the
documentation loop stopped at the document element and
window events weren't included even though they are
applicable for the currently focused element.

src/packages/event-palette/spec/event-palette-spec.coffee

@@ -30,6 +30,20 @@ describe "EventPalette", ->
         else
           expect(eventLi).not.toExist()
 
+    it "displays all events registerd on the window", ->
+      editorEvents = rootView.getActiveEditor().events()
+      windowEvents = $(window).events()
+      expect(_.isEmpty(windowEvents)).toBeFalsy()
+      for eventName, description of windowEvents
+        eventLi = palette.list.children("[data-event-name='#{eventName}']")
+        description = editorEvents[eventName] unless description
+        if description
+          expect(eventLi).toExist()
+          expect(eventLi.find('.event-name')).toHaveText(eventName)
+          expect(eventLi.find('.event-description')).toHaveText(description)
+        else
+          expect(eventLi).not.toExist()
+
     it "focuses the mini-editor and selects the first event", ->
       expect(palette.miniEditor.isFocused).toBeTruthy()
       expect(palette.find('.event:first')).toHaveClass 'selected'

src/packages/event-palette/src/event-palette.coffee

@@ -28,7 +28,7 @@ class EventPalette extends SelectList
     @keyBindings = _.losslessInvert(keymap.bindingsForElement(@previouslyFocusedElement))
 
     events = []
-    for eventName, eventDescription of @previouslyFocusedElement.events()
+    for eventName, eventDescription of _.extend($(window).events(), @previouslyFocusedElement.events())
       events.push({eventName, eventDescription}) if eventDescription
 
     events = _.sortBy events, (e) -> e.eventDescription