[Schedule] Display translation key instead of techical value in action column

[markus-moser]

• The dropdown shows nicely translated values whereas the column content is displayed without translation keys:

• The column value should not be centered but left aligned like in the design:

• Also the select styling (with purple color and arrow for the dropdown) for the action picker is not like in the design.

Related to #348

[Corepex]

@markus-moser when should the version column be purple and select styled and when not?

I added the style for every entry ... see:

[markus-moser]

@Corepex That's a good point. Let's style it always with the purple select styling like in your suggestion.