SUB Control

-Added demo mode
-Added + and - buttons on the volume control page (you can hold the button)
-Added mute button
-Added a numerical view of the current volume
-Added support for extra PEQ channels while using sub2090 mode
-Replaced line graphs with curves
-Fixed button flicker on the Volume page
-Fixed AutoEQ crash with Lollipop(needs sub woofer firmware upgrade)
-changed record tone time to 1 second
-Added persistent storage of auto eq results
-improved app stability