Adding non direct OC deps to avoid some warnings

In trusty retrace
Add a retry using old packages when the stacktrace is not usable

Only available for -f and -u options in oc-crash-digger.

It is a WIP, we should be able to manipulate the versions programatically.
Do not crash if the stacktrace is invalid
Break with the first configuration with a readable stacktrace
Added missing samba dep
Added client side duplicates tracking
Store original URL from the crash
Added suggested_file_name to the upload method
Better naming to processed crashes

* Use crash extension when generating it
* Use a suggested name when the crash already has \d+_ as starting name
Fix typo in db conf example
Management of tracker URL in sqlite DB
Added tracker management for crash report

Only for redmine by now
Use GB mirrors which are faster
Added missing dependency to README
Added an option to send a notification to a user

Once the upload has finished
Remove debug sentences
Fix components line in issue description
Minor fixes on mail and tracker output
Start development of openchange-2.3-VULCAN
Return errors instead of abort on emsmdbp_mailbox_provision