Fixed, app.exitAfterWindowsClose,app.packaged,docs

* Fixed exitAfterWindowsClose on [win]
* Changed default behavior of exit after windows closed to true.
* Fixed documentation (typos, inconsistencies with interface)
* Added unit test for appexitonwinclose
* Removed application.windows property, prevented proper GC of windows
on V8.
* Fixed unit tests that exit early due to new default of
exitAfterWindowsClose
* Fixed application.packaged, it now functions correctly.
* Removed split behavior in app schema for appication.packaged.