Errors in test files

Hi Massimo,

Trying to build the DEB package I've found 2 errors in the tests:

1.- The QLCChannel test was expecting a list of colours of 8 instead of 9 different colours. I assume the error was because of the addition of the Amber colour.

2.- The AboutBox test was expecting the old URL.

Regards

Luis

PS. As usual, please review if this is correct.