Live Volume Steps [2/2]

Change-Id: Ibe9cf2772890c1fbef55ab6cc78059a39c514d7d
[2/2] Settings: Volume panel timeout

Base: https://gerrit.omnirom.org/#/c/5516/

PS2: fix build
PS3: use SeekBar from chameleonOS to get seconds

Change-Id: Ic5c09e70ff08ad030119a8b169b885a8053e3a6f
Separate Live volume steps into separate menu and class

Change-Id: I6534cc2e14ece2067f1f361c879dd043bfbaa00b