Merge branch '4-fix-splash-screen' into 'master'

android/app/src/main/res/drawable-v21/launch_background.xml

android/app/src/main/res/drawable/launch_background.xml

android/app/src/main/res/mipmap-hdpi/launch_image.png

android/app/src/main/res/mipmap-mdpi/launch_image.png

android/app/src/main/res/mipmap-xhdpi/launch_image.png

android/app/src/main/res/mipmap-xxhdpi/launch_image.png

android/app/src/main/res/mipmap-xxxhdpi/launch_image.png

android/app/src/main/res/values-night/styles.xml

android/app/src/main/res/values/styles.xml

android/gradle.properties

fastlane/metadata/android/en-US/changelogs/4.txt

fastlane/metadata/android/fr-FR/changelogs/4.txt

icons/build_application_icons.sh