plugin doesn't remember 12h checkbox value

[flaimo]

two things:

1. i thing it would be better to uncheck the 12h checkbox by default, since the majority on this planet uses the 24h system.
2. if a user changes the checkbox, the state should be remembered permanently until he changes it again. right now the checkbox is checked every time i start the openinghours editor, which gets annoying rather quickly.

[boman]

You are right, the check-box is checked on every start depending on whether your localization uses the 12h or 24h mode.

Saving the state of the check-box is a very good idea. I will try to implement this functionality.