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.

* 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

* Composer layout tweaked

* Fix localization error

* Bump version to 1.3.2

* Fix user.roles

* Better onLongPress handle on messages

* Indicator position

* Fix role undefined in system messages

* Add baseUrl in case of file attachments

* Join room fixed

* RoomView params

* Broadcast fixes

* Add server layout changes

* Use native images

* Subscribe to not joined channels

* Fix alerts without i18n

* Tests updated

* message container/component

* Separator component

* Reply

* Url

* tests updated

* Minor changes

* Audio component

* Broadcast button

* Minor touches

* Reply preview

* Edited

* Minor bug fixes

* - Update roadmap
- Bump version to 1.2

* Onboarding styles fix

* server.current removed

* Increased area of touch on header

* Hide search when sort dropdown is tapped

* default server icon url

* 1.1.1

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Closes #399 

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- [x] Added FlatList.getItemLayout() to improve list render time
- [x] Some texts were breaking lines at sidebar
- [x] Removed onPress from links at RoomsListView
- [x] Added eslint rule to prevent unused styles
- [x] Fixed auto focus bug at CreateChannel and NewServer
- [x] Fix change server bug
- [x] Fixed a bug when resuming in ListServer
- [x] I18n fixed
- [x] Fixed a bug on actionsheet ref not being created
- [x] Reply wasn't showing on Android
- [x] Use Notification.Builder.setColor/getColor only after Android SDK 23
- [x] Listen to app state only when inside app
- [x] Switched register push token position in order to improve login performance
- [x] When deep link changes server, it doesn't refresh rooms list
- [x] Added SafeAreaView in all views to improve iPhone X experience
- [x] Subpath regex #388 

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- [x] Crop image
- [x] Type image description (like web)
- [x] Show upload progress
- [x] "Try again" in case of error
- [x] Cancel upload while in progress
- [x] [Android] Zoom on photos

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