Port colorpicker

All credits to kufikugel

Change-Id: Ib2cbdb3753e64fe8ae78fa287135e13ffd261c97

Conflicts:
	res/values/ck_strings.xml

Conflicts:
	res/values/beergang_strings.xml

	new file:   res/layout/dialog_color_picker.xml
	modified:   res/values/kow_strings.xml
	new file:   src/net/margaritov/preference/colorpicker/AlphaPatternDrawable.java
	new file:   src/net/margaritov/preference/colorpicker/ColorPickerDialog.java
	new file:   src/net/margaritov/preference/colorpicker/ColorPickerPanelView.java
	new file:   src/net/margaritov/preference/colorpicker/ColorPickerPreference.java
	new file:   src/net/margaritov/preference/colorpicker/ColorPickerView.java