Added rewriting hash if openchange is enabled
Added openchangeEnabled parameter to write the main.cf file
Added select with vdomains before provision
Outgoing sender address could be now be rewritten

Conflicts:
	main/openchange/src/EBox/OpenChange.pm
Hash for the generic Postfix rewrite policy
Update changelogs

Conflicts:
	main/mail/ChangeLog
	main/openchange/ChangeLog
Changes in Mail module depend in openchange provision (not enabling)
Fixed: Not all domains were listed
Removed debuging use
Fixed unworking code
Fixed a Save Changes issue

 * outgoingDomain field was not found. Not it is shown but with hidden=>1
Removed empty line
Merge pull request #879 from Zentyal/mjulian/multiple-oc-domain-32

Mjulian/multiple oc domain 32