[dev] Commit digest

[Duck]

I enlarged the search mechanism (http://bugs.horde.org/ticket/7274) to accept 
dates as criteria. So now we can have a feed on planet.horde.org with resolved 
tickets cross queues in the last time slice. And of course now we have all we 
needed to prepare a basic automated "commit digest".

I guess that it will be better to leave the automations script every Sunday 
night so we get a fresh post in on Monday morning. And leave developers to 
comment commits or better to post now blogs with explanations and related 
activities.

Duck