en to unknown language translation catalogue (4 entries)

[ctx: AboutBoxDialog]
en: <a href="stub.com">Special gratitude</a>
target: <a href="stub.com">Authors</a>

[ctx: AboutBoxDialog]
en: All Rights Reserved
target: All rights reserved

[ctx: AboutBoxDialog]
en: Licence key
target: License key

[ctx: AboutBoxDialog]
en: Visit homepage
target: Visit home page
