Adding a time range feature in GTG

[Léo Gillot-Lamure]

Hello.

Using GTG I have quickly felt the need to restrain the active state of a task with a time range. Indeed a lot of tasks are only achievable during specific time ranges, for example administrative phone calls or shopping are only doable during the day.
Hence it is a annoyance to have them displayed in the work view during the night.
I realized the need for this feature because I've often found myself setting the start date of tasks to "Tomorrow" at the evening.

This feature could be implemented as a tag option, for example replacing the "Show tag in work view" with a list "Always, Never, Time range", that last choice making two hour selection widgets appear.

I'm willing to try (I said try, I'll have to re-re-learn python fîrst, hehe) to implement this feature, and as Parin Porecha told me the feature could be mainlined, i'm starting hacking :).
Opening a bug as requested.

Cheers.