status bar, invisible characters, ...

- invisible characters (+ icon to menu)
- added goto line to menu
- temporarily hidden Task List (not implemented yet?)
- saving of config from close event
- status bar (cusor position + selection length, session mode, macro recording)
these changes are not nice, not sure if those ace events should be abstracted somehow... and the <any> type... not sure if all the things should be added to ace.d.ts