*  Create user table

*  Introduce user table

*  Remove unused table

*  Add userdefaults to storage data

*  Fix android build

*  Get credentials from iOS native client

*  Remove unused code

*  Revert sign xcode

*  Fix first login-logout

*  Use constants to UserDefaults Keys

*  Fix clear server-user-info on logout

*  Fix filter null value

*  Remove user object in logout

*  Fix get servers from native-client

*  Fix error on change server

* Add unimodules

* Working on iOS

* Working on android

* Remove react-native-safari-view

* Remove previous android link lib

* Show webpage title on Android

* Fix iOS build

We need to migrate from deprecated react-native-fabric to react-native-firebase.
This PR enables following Firebase features:
* Analytics
* Crashlytics
* Performance

It also tracks screen view without the necessity of HOC.

Future work:
I won't do it in this PR because it's large enough, but we need to log more app events, like 'sent_message', 'open_admin', 'media_upload', etc.

* update IOS react native to 0.59.8

* update Android react native to 0.59.8

* fix eslint errors

* Android debug working

* Android build

* Fix lint

* Making jest happy

* Update CircleCI android image

* Fix android build

* Use 32 bits

* Fix iOS build

* Update detox

* Use new Xcode build system

* Use old build system

* Update realm (64 bits support)

- Refactored Message component to use React.memo and re-render only what's necessary
- Added a test mode to toggle markdown parse by long press drawer (it'll be removed in the next release)

* New Icons

* Remove unused assets

* Change send icon

* Layout tweaks

* Refactor Status

* Styles changed

* User layout fix

* Separator layout changes

* Sidebar status layout fix

* Fix Message.onLongPress issue

* Fix code markdown
Closes https://github.com/RocketChat/Rocket.Chat.ReactNative/issues/625

* Status lint

* Fix tests

* Navigation debounce

* RoomActions icons

* Space between components

* Group text

* Update tests

* Downgrade react-native-fast-image

* Update iOS permission usage descriptions

* [FIX] Delete upload item

New Authentication layout

* v2

* Working on Android 0.57.3

* Drawer working

* Removing v1 navigator

* - Splash screen
- Icons changed

* Deeplink

* Remove EventEmitter from CreateChannelView

* Android search

* Android notifications

* OAuth

* Fix search props

* Lint and tests fixed

* Fix android build

* Improvements on iPhone X* usage

* Fix detox

* Fix android build

* Room.f added to RoomView.shouldComponentUpdate

* Animations on RoomsListView and RoomView

* Fix topbar buttons on Android