settings: add remote view tile (2/2)

Change-Id: If1459085628fecd8875cca51609b6bc7efbf1cbe
Settings: enable hex color picker for quicksettings styles

Enable the hidden hex value option in the margaritov color
    picker used in the quicksettings styles menu so users
    can input hex values directly for tile background color,
    tile background pressed color, and text color. This was a
    requested feature.

Change-Id: Ib4e517c38a9edbc1a450c1266daa8b25e1cf4a5f
Settings: Show heads up at the bottom of the screen (2/2)

Due of user requests and indeed especially on hw key devices for a better
workflow we add an option to show heads up notifications on the bottom instead
of the top.

Animation we leave as is due that if it slide from the bottom into the screen it happens
to often that the user accidentaly interacts with it. If it comes from the top of the
container we add, the user has enough time to realize it. Sometimes a ms can make a big difference.

Change-Id: Ieab601df1dc4fa5350fe4b9e4952198eb8e2d788