Adjust animation scale range.

The animation scale options are _developer_ options for a reason: They
allow _developers_ to assess and debug animations in the apps the're
developing. A max scale of 2 is not sufficient for that purpose, so
increase the scale.

Change-Id: I68cc5f2f73006ca7696f3950e5e57a38c6341065
Settings: set proper default value for tap to wake

The first time the display_settings.xml file gets inflated, the
PreferenceManager takes the defaultValue and persists it in the default
shared preferences file.

When we read the double tap to wake preference,
we assume it has a default value of true, which it uses until the user
enters Display Settings for the first time. At that point, the default
value is persisted, and every boot after will use the default value in
display_settings.xml.

Remove the default defined in the XML file.

Change-Id: I0989dd73b6b3c42ff8649bc17eebf4e191293ee4
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge https://github.com/CyanogenMod/android_packages_apps_Settings into kitkat