* cache page on forward navigation
Still some failing navigation tests
* Current page is kept alive when navigating forward
Refactoring code and removing all hacks and flags
Remove one module circular reference
* Disable Page recycling because when there is transition between pages the nativeView stays animated (e.g. when transition is Fade the hidden page nativeView stays with Alpha 0)
Disable recycling if there is native anitmation
* Fix failing tests on ios & android API17
Fix wrong urls in http tests
Made some timer tests async
* Animations are not stored in BackstackEntry instead of Fragment because fragments could die (activity die) and recreated and we lose animations.
* Fix android crash when activity is recreated.
Refactoring transitionListener.
