* for a given SLA you should be able to add percentages for fixes on services:
  for example: 80% of the issues for service X should be fixed within Y hours.
* get js datepicker format from settings, so as to keep in sync with 
  formatter for incoming data
* readmail in readme
* Add wiki
* check no notify on comment
* allow nog comment on issue state change
* allow state change with no notification
* add state "awaiting input"

