[dev] [patch] orator duration

[Chuck Hagenbuch]

Quoting Stefan Kronawithleitner <stefan at kronawithleitner.at>:

> In current versions of Orator there are the attributes duration & effect, both
> not used, but duration is very useful. These two small patches implement the
> duration - I'm not sure, that is is the best way to do this, but it 
> works. When the duration is set, the refresh-header is set, except for the 
> last page of the presentation. (perhaps loop the presentation, when duration 
> at the last slide is set?)

Committed - thanks!

-chuck

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