Bug 844029 - [music] Hide all pages before startup and lazily load Player.js
Merge pull request #8265 from dominickuo/music-performance-tuning

Bug 844029 - [music] Hide all pages before startup and lazy load Player.js, r=djf
[FTU] Bug 811149 - Better feedback for connecting to WiFi

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Show message when no networks
Updated sprites for different wifi states
Refactor wifi UI outside general UI
Icon animation while connecting to wifi
Message overlay while scanning networks
Join button disabled when password too short