Revert "Hiding elements that are not editable while auto synced."

This reverts commit d9dd34bf0dbf9c891297c8ff9078437a993b0098.

Per discussion on GitHub, going ahead and reverting this for now.
move clock json conversion code to GameClock

This will make it easier to generate a big json with all the data.
Provide single request to get all scoreboard data

This fixes #30. http://path/to/scoreboard/data.json now returns a JSON blob
containing all the data known to the scoreboard.