* Add paddingTop to android ToolBar.

* Update documentation

* Restructure TopTabsLayout

* Refactor Containers

* Consolidate view creators. For some reason we had double abstraction layer and had creators invoking creators
* Rename ContainerView to ContainerLayout

* fix test

* side menu visibility options

* e2e fix

* Rename ContainerView related classes (#2328)

* Rename ContainerView related classes

* fix test

* rename ContainerViewCreator

* splitted showSideMenu into two methods

* Add topTabTextFontFamily style option

* Add topTabTextFontFamily sample usage to example project

* Preview API

* Added preview actions and fail-guard wrappers

* Remove old setters

* Moved from passProps to actionParams

* Move findNodeHandle to internal method

* Removing findNodeHandle

* Added height and option to dont 'pop' the view controller

* Documentation update for peek and pop

* Document how to access button press events

* Commit by default in example. Because it's cool

* Docs and if elses ifs then

* Unregister previous ViewController on attempt to preview.

* Merge conflict fail

* Rename ContainerView related classes

* fix test

* rename ContainerViewCreator

* add support to tell screen to place its self underneath the statusbar for android.

* added property to documentation.

* Auto generate docs

Docs can be generatred by running yarn run gen-doc
Add jsdoc and jsdoc2md dev dependencies

* Add tests to NavigationOption params

* fix tests

* Fix e2e and implement missing classes after rebase

* f

Missed Comma throw "unexpected Token" error.

* refactored e2e tests to work with testIDs

* lint fix

* android e2e fixed

* added tabBar toggle

* added tabBarHidden e2e

* changed tabBar api prop to bottomTabs

* unit test fix

* screen Background Color iOS

* ios v2 topBarTextFontFamily

* added topBarHidden to iOS

* minor fix and topBarHideOnScroll

* minor fix

* topBarButtonColor iOS

* topBarTranslucent iOS

* topBarTranslucent IOS minor fixes

* eslint fixes

* minor fixes

* changed setTabBadge to tabBadge and added a unit test in iOS

* added fontSize on iOS

* minor fix

* topBarTransparent

* minor fix

* first dirty custom transition iOS poc. in need of complete refactor and testing

* dirty poc for view transition

* dirty poc of interactive transition

* deleted unNeeded Files

* cleaning

* cleaning, support for interactiveImagePop and backButton custom transition

* cleaning

* merge v2 into custom-transition-animation fix

* merge fix

* merge fix

* cleaning and merge fix

* support for multiple animation in parralel, animations with are not shared element including: velocity, spring, alpha and translate

* last commit should also include these

* added resize mode animation and fixed flickering bug

* refactoring

* first cleaning and another test

* cleaning

* commandsHandler now accepts bridge in constructor, fixed tests, added e2e test

* eslint

* android pop now recieves two parameters - preparation for custom transition

* Refactor + add afterLoad to modal

* merge v2 second try

* merge fix

* merge fix

* fix ios unit tests

* fixed topBarTransparent e2e

* fix js tests

* refactored RNNAnimator, RNNAnimatedView, small fixes

* refactor topBarLargeTitle

* fixed lifycycle bug with componentWillUnmount, small fixes

* fix transparent conflict

* removered Element.js from coverage report

* comment redundent test
(still needs to be discussed), small fix

* removed commented test, moved element.js to adapters

Usage
```js
Navigation.setDefaultOptions({
      topBar: {
        backgroundColor: 'red'
      }
    });
```

* disabled back gesture support

* changed disabledBackGesture prop name to popGesture