Revert "Don't trigger scroll event on edit session load, it is called automatically "

This reverts commit cae7c18db4.

src/app/editor.coffee

@@ -381,6 +381,7 @@ class Editor extends View
     editSession = @getActiveEditSession()
     @verticalScrollbar.scrollTop(editSession.scrollTop ? 0)
     @scrollView.scrollLeft(editSession.scrollLeft ? 0)
+    @verticalScrollbar.trigger 'scroll'
 
   saveCurrentEditSession: ->
     @editSessions[@activeEditSessionIndex] =