Feature 'Change Error Report Status upon change on SF bug Ticket'.

**Add feature 'Change Error Report Status upon change in Associated Bug Ticket of SourceForge.'**
Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>

Added a generic cron job dispatcher which creates a cron job without breaking MVC of CakePHP. It can be used to set up other cron jobs as well. A seperate log is also added for all the cron jobs.

To synchronize the Report Statuses with SF Tickets, run command:
`php app/webroot/cron_dispatcher.php /source_forge/sync_ticket_statuses`.
Run that command periodically, i.e. every X time.

To run any other ***action*** as a cron job.
    `<php parser> app/webroot/cron_dispatcher.php <action URL>`