m7-common: update defaults for home actions

*long press home > Google Now
*double tap home > Recents

*merge after http://gerrit.aokp.co/#/c/15318/ since
 we don't need a menu key + menu action for homekey

Change-Id: I83c97c28907d489edcc73bb7af5cff6fe83898ed
Signed-off-by: Jonathan Steadman <xxwhitehawk@gmail.com>