Merge branch '5-improve-game-layout' into 'master'

android/gradle.properties

assets/skins/default_tile_1.png

assets/skins/default_tile_2.png

assets/skins/default_tile_3.png

assets/skins/default_tile_4.png

assets/skins/default_tile_5.png

assets/skins/default_tile_6.png

assets/skins/default_tile_7.png

assets/skins/default_tile_8.png

assets/skins/default_tile_mine.png

assets/skins/default_tile_mine_not_found.png

fastlane/metadata/android/en-US/changelogs/14.txt

fastlane/metadata/android/fr-FR/changelogs/14.txt

icons/skins/default/tile_1.svg

icons/skins/default/tile_2.svg

icons/skins/default/tile_3.svg

icons/skins/default/tile_4.svg

icons/skins/default/tile_5.svg

icons/skins/default/tile_6.svg

icons/skins/default/tile_7.svg