Settings: Accessibility - We want consistence...change from CheckBoxPreference to SwitchPreference

Google changed it on all main settings. It does not make sense that on system settings
the old CheckBoxes are still used.

This commit changes all CheckBoxes in accessibility settings to Switches

Same needs to be done for Date and Time and Developer Settings

Change-Id: I335285270bcb8fa5e6e86f32a099f901e6d44d29
    Settings: Date and Time - We want consistence...change from CheckBoxPreference to SwitchPreference

    Google changed it on all main settings. It does not make sense that on system settings
    the old CheckBoxes are still used.

    This commit changes all CheckBoxes in Date and Time settings to Switches

    Same needs to be done for Developer Settings

    Change-Id: I5c1f34b813ede998e4fb9dab2a1184a6db51bf79

Change-Id: I1eecfa0e10054e3acf1d4afd58a31f2f35ab476f