[BC-Break][TimeGroup] Empty time in timegroup

Morning,

This bug was described directly on GitHub's commit.
https://github.com/FreePBX/timeconditions/commit/c9beb003b406531080a6ce3f8e84732f0b288ca1

For a summary:
The commit c9beb003b406531080a6ce3f8e84732f0b288ca1 introduce a BC-Break with previous method.

Before this commit, you may prepare all your timegroups with an empty time detail, like client-holiday. This timegroup was linked with all your wanted timecondition and when this client define a new holiday, all timeconditions was OK.

Now, if the timegroup is without any time detail, he match all times because he insert into timegroups_detail, |||. So how can prepare my timegroups ?

Another question, when user remove all times in timegroups you remove this timegroups for all timeconditions that uses it ?

Regards,
Boris.