Merge 4.27.0 into master (#4135)

.circleci/config.yml

.eslintrc.js

android/app/build.gradle

android/app/src/main/assets/fonts/custom.ttf

.../play/java/chat/rocket/reactnative/AdditionalModules.java

android/settings.gradle

app/AppContainer.tsx

app/actions/login.ts

app/actions/messages.ts

app/containers/ActionSheet/ActionSheet.tsx

app/containers/ActionSheet/Handle.tsx

app/containers/ActionSheet/Item.tsx

app/containers/ActionSheet/Provider.tsx

app/containers/ActivityIndicator.tsx

app/containers/AppVersion.tsx

app/containers/Avatar/Avatar.tsx

app/containers/Avatar/index.tsx

app/containers/Avatar/interfaces.ts

app/containers/BackgroundContainer/index.tsx

app/containers/Button/index.tsx