Update CastVideos-iOS

Fixes issue with cast icon not being filled when connected (b/16868065)
Increases disconnect touch area on ipad (b/16943722)
Fixes removing cast icon when last device when it disconnects
Add volume control UI to connected menu
Set volume control UI to trigger volume changes
Update volume control UI on iphone on casting view
Update volume control UI on ipad on casting view
Bump to version 1.0.1
Fixes playing video again after playback completed (b/16987024)
Fixes local player resetting after viewing device menu (b/16984027)
Fixes tear down after 5 minutes (b/16986150)
Fixes reconnect after wifi dropout (b/16984325)
Add volume icons
Setup disconnect to properly reset cast status so new playing reconnects
Fix toggling back and forth to cast (b/16985905)

Change-Id: I68fe0f9d2ae15d94375ce89b9d1b6147ad0520f3
Remove hardware volume button support

Remove the code to override the hardware volume buttons.

Change-Id: Ibf51be829b29712d2ea7a0055ee9250b0f734a84