* Refactor peek and pop

* Rollback some XCode stuff

* Added tests for touchablePreview event

* Also fixing searchbarcancelpressed event

- Added missing step: Ignoring the build variants that we don't use or building the app module directly so it picks up the correct build variant
- Converged Step 2 and 3 into one step since they both required tweaking according to the React-Native version a project uses.

* Simplify searchBarHiddenWhenScrolling making its behaviour default to iOS one

* Update RNNTopBarOptions.m

When TopBar visibility was changed during screen animation, changes to hierarchy
caused screen animation to end prematurely.

This resolves a few edge cases where screens overlapped the TopBar

"more then one screen" should be "more than one screen"

The flag was initially set to prevent the root layout from being pushed down when showing full screen modals.
This isn't the right approach and it also messed up keyboard handling.
To prevent the root layout from being pushed down in this scenario we should probably handle window insets

Due to a race condition, the height and width of the Lightbox screen
may be read too early, resulting in a zero-width or height lightbox.

Addresses Content of lightbox not displayed #2288

* Support UIBarStyle for topBar and bottomTabs

* Added to docs

* Update events.md

* change query param to text

This commit also upgrades TypeScript to version 2.9.x

`wether` -> `whether`

title was renamed to text

`relase` ->` release`

This resolves an issue where currentTabIndex, for example, was not cleared properly
if it was set in initialOptions as it was cloned each time clearOptions was invoked.

This reverts commit 9d4eea835a.