Digital watchface seconds instead of colon

[mashuptwice]

Shows seconds instead of colon seperator.

Please be gentle with my code, this is the first bigger project I am working on.

Currently the label objects are split into hh, mm, s1, and s2. The fine-positioning of the clocks elements and fixing the position of the 12H digits is done with pixel offsets.

[FintasticMan]

I personally quite like this change, but I think it should definitely not be the default. I think that it could be behind a settings menu like PTS has.

[ghost]

@FintasticMan good point, that would make it dependent on #1028 or similar.

Edit: The PR seems abandoned, but its goals are overlapping with changes on my fork. I might adapt some of the changes.