Add a11y, hover support to rotate suggestion button

Tweaks timeouts from volume dialog for a11y and hover. Repurposes
volume dialog code to detect when a11y feedback services are active.
New content description needs to be localized. Also includes some 
related cleanup.

Test: a11y manual by toggling service, hover manual with usb mouse

Change-Id: Ife12c74910c1658e06e75a4baf393a56568e985b