Added simple color wheel dialog

It has no color wheel but it has a basic interface for picking a color.
Hue & Saturation wheel is now rendered. It uses magic shader business and it's great.
hue and value now work when touching the wheel
Value is now a param in wheel
Color picking with hue and saturation now works
removed redundant ok and cancel strings
reformatted xml file in android way
fixed android compat dependency version
Added slider to picker dialog
Made slider larger so it's easier to touch
removed background for the dialog layout

no point in setting it twice
set default color to be black