* Revert "Handle NPE when showing Overlay before setRoot is called"

This reverts commit e4db9e6419.

* Revert "Fix test: Check if the button the sidemenu is no longer visible (#3779)"

This reverts commit 26c12f7757.

* Revert "Closes #3545"

This reverts commit 054ae64cdf.

* Revert "Address possible NPE in detachView and attachView"

This reverts commit f2f5eaf2d4.

* Revert "Fix crash when user tapped on screen before initial meaningful render"

This reverts commit 48b7d60bf7.

* Revert "Check if tab exists before applying tab options"

This reverts commit 3073f295fb.

* Revert "Null check tabTestId"

This reverts commit 770a001ba9.

* Revert "Don't crash if Modal related commands are called before root is set"

This reverts commit aa8135dcbf.

* Revert "Closes #3545 (#3874)"

This reverts commit feab91de5c.

* Revert "Update Installing.md (#3870)"

This reverts commit 5cecd814f6.

* Revert "Update docs"

This reverts commit 98053e60ec.

* Revert "Delegate onNewIntent to reactInstanceManager"

This reverts commit 3074407577.

* Revert "Removed the headers form copy build phase - they are copied as headers. This was causing build error on Xcode 10 (#3774)"

This reverts commit ed657c99a1.