Merge pull request #166 from matrix-org/valr/mobile_support

src/clients/Element.ts

src/clients/Fractal.tsx

src/clients/Nheko.tsx

src/clients/Weechat.tsx

src/clients/types.ts

src/components/ClientTile.scss

src/components/ClientTile.tsx

src/imgs/app-store-us-alt.svg

src/imgs/fdroid-badge.png

src/imgs/google-play-us.svg