Apparently, UiImplementation doesn't like it when views disappear from hierarchy unexpectedly.
As yellow boxes are added to all ReactRootViews, we remove them from TopBar components.
When these components got unmounted, UiImplementation tried to remove the yellow box and since it
couldn't find it - it crashed.

This commit simply adds the yellow box before views are unmounted.

[BREAKING] Buttons refactor

* Support setting single button
```js
  topBar: {
    rightButtons: {
    }
  }
```
* [BREAKING] Rename button.title to button.text

* Set TopBar default background color (white)

This commit introduces an option to control the way components are pushed into the stack.
When pushing components into a stack, they are pushed the moment they are measured.
If `waitForRender` is true, components will be pushed only after the initial render.

api:

```js
options: {
  animations: {
    push: {
      waitForRender: true
    },
    showModal: {
      waitForRender: true
    }
  }
}
```

* [ios11+] Add searchBar option for topBar

* Fix formatting and linter issues

* Add docs about topBar.searchBar

* Fix missing semicolons

* Revert prettier changes

* Add js tests for onSearchBarUpdated to achieve 100% coverage

* Mark searchBar test as :ios: specific

* V2: Peek and pop

* Add event when preview is dismissed in non commit mode

* tslint

* Refactor playground. Document preview api

* Added width prop

* Implement hybrid push/preview button

* Fixing small linting errors

* Work in progress

* Arbitary changes

* Improvements on API

* Cleanup RNNSplitViewController, allow mergeOptions

* Added documentation and better playground example

* Adding tests for coverage

* Find out why this test is failing.

* Only show split view on iOS

* Add test back in

* Update docs

Outdated onAppLaunched part is changed

I just started to a project with v2 and I realized this part of the documentation was wrong. I searched a bit and find this 2 commits: 

104e3f97fd

1d2680c5aa

So, that part is probably forgotten

* Modal unmount e2e test

* Modal unmount e2e test changes.

* Refactor TopBar options, introduce title options

* Update background to new api

* Refactored topBar options on iOS

* Initial react component in TitleBar android

* set height to react view in TitleBar

* fix tests and lint

* ios unit tests fix

* External Component implementation

* Limit External component e2e to Android for now

* custom viewController support

* native component support and e2e

* custom viewController support

* native component support and e2e

* unit test fix

* basic fab

* fab menu

* fab menu clicks

* pop lifecycle

* options lifecycle

* refactoring

* refactor

* parse unit tests

* refacotr

* fix test

* align

* fab unit tests

* more tests

* size

* hide on scroll in progress

* options

* menu collapse

* parser test

* merge v2

* refactor

* refactor

* more refactor

* more refactor

* fix

* more refactoring

* refactor

* refactor

* fix

* fix

* fixed undefined key

* refactor

* refactor

* refactort

* generate id only when not already provided

* allows passing id

* fixes #2652

* detox android support

* detox android support

* android detox fixes

* android fixes

* more android e2e fixes

* typo fix

* build fix

* remove specific test for ios

* Update DetoxTest.java

* lint fix

* fixed typo

* Update ViewController.java

* added script for android detox e2e

* detox android support

* android detox fixes

* android fixes

* more android e2e fixes

* typo fix

* build fix

* remove specific test for ios

* Update DetoxTest.java

* lint fix

* fixed typo

* Update ViewController.java

* added script for android detox e2e

* e2e test fixes

* Update Orientations.test.js

* Update ScreenStack.test.js

* Update ScreenStyle.test.js

* Update TopLevelApi.test.js

* overlay support

* default options support
* refactored navigation options

* set current tab by container id

* currentTabByContainerID e2e

* lint fix

* e2e test

* tabBarItem support

* apply tab items on tabController initialization

* e2e test

* refactored bottomTab item

* tests fix

* tabItem testID fix

* renamed tabBadge to badge

* fix merge

* BottomTab fix

* removed BottomTabs

* side menu visibility options

* e2e fix

* Rename ContainerView related classes (#2328)

* Rename ContainerView related classes

* fix test

* rename ContainerViewCreator

* splitted showSideMenu into two methods

* refactored e2e tests to work with testIDs

* lint fix

* android e2e fixed