Add icon for openchange module
Fix precondition on samba GPOScripts model
Add openchange configuration to smb.conf
New openchange module

* Provision and deprovision
* User addon to enable/disable accounts
Write GNUstep defaults and create SOGo DB
Fix wrong package dependence
Detach sogo daemon
Set PKG_CONFIG_PATH in debian/rules
Depend on zentyal samba4 libraries instead system
Disable user addons if module is not provisioned
Create GNUstep directories when enabling module
Set defaults in /etc/sogo/sogo.conf instead ~/GNUstep
Merge branch 'master' into scabrero/openchange

Conflicts:
	main/core/ChangeLog
	main/samba/ChangeLog
	main/software/ChangeLog
Add constant to ignore containers when quering LDB users
Fix module provision state on deprovision

Drop SOGo database and user on deprovision
Add function to retrieve SOGo database name
Add provision type, first server or additional
Merge branch 'master' into scabrero/openchange

Conflicts:
	main/core/ChangeLog
	main/core/extra/css/public.css.mas
	main/samba/ChangeLog
	main/software/ChangeLog
Enable IMAP service on localhost for openchange

Listen on localhost even if IMAP and IMAPS retrieval services are disabled in
the mail module when openchange is enabled and provisioned.
Check AD domain is defined in Virtual Domains