en to en_GB translation catalogue (4 entries)

note: i18n: ectx: property (text), widget (QRadioButton, kcfg_RadioColor)
en: &Color
en_GB: &Colour

note: i18n: ectx: property (text), widget (QLabel, label_3)
en: Color count:
en_GB: Colour count:

note: i18n: ectx: label, entry (BgColor), group (Background)
en: The background color to be used.
en_GB: The background colour to be used.

note: i18n: ectx: label, entry (CustomColorCount), group (CustomGame)
en: The number of colors in the playing field.
en_GB: The number of colours in the playing field.
