add notifications;

[timgluz]

It's possible to add reminders:

• Once a day, it should post a list of new releases;
• Unresolved security issues

[timgluz]

work in progress and found incredible scheduling library: http://immutant.org/tutorials/scheduling/

[timgluz]

Done,

First implementation is pretty naive:

• it sends out notifications 9.00 at server time
• it only sends once and doesnt re-try to send failed messages
• it only sends notifications about newest releases of followed packages;