en to en_GB translation catalogue (7 entries)

[ctx: @action]
en: Align &Center
en_GB: Align &Centre

[ctx: @label center justify]
en: Center
en_GB: Centre

[ctx: @action]
en: Text &Color…
en_GB: Text &Colour…

[ctx: @label stroke color]
en: Color
en_GB: Colour

[ctx: @action]
en: Checkbox
en_GB: Tick box

[ctx: @option:check]
en: Background Color:
en_GB: Background Colour:

en: Center
en_GB: Centre
