What?

Adds meta to any templates created from this point forward, so we can easily distinguish between templates created the old way and new way.

Why?

1. This makes the migrate function more stable: if the active_templates option is ever removed, any new templates created will not suddenly become activated due to this migration, only the old templates will.
2. It gives us a bit more room to fix migrations in case of a revert of the whole feature.

How?

Adds the meta any time a template is created from now on. In the migration function, check that the templates do not have this meta.

To do: when you de-activate one of the old templates, ideally we should add the meta to them.

Idea: perhaps there is a way we can avoid the migration entirely: if a template doesn't have the inactive_by_default meta, then it should just be considered active regardless of the option. It makes the checks for activation a bit more complex though.

Testing Instructions

Create a new template. Delete the active_templates option. This new templates should not be activated due to the migration function.

Testing Instructions for Keyboard

Screenshots or screencast