Give support to custom actions without image

+ Those actions will not appear in the legend.
+ Added some devel doc to EBox::Types::MultiStateAction class
Updated automatic bug report URL to new bug report endpoint.
Added a comment.
Update copyright end
Merge pull request #938 from Zentyal/ejhernandez/custom-actions-no-img

Give support to custom actions without image
Updated firewall to use the new haproxy API

Conflicts:
	main/firewall/ChangeLog
Added unit tests for EBox::Util::Version and added support for the new development schema version
Merge pull request #943 from Zentyal/cperello/haproxy-fixes

Cperello/haproxy fixes
Merge branch 'master' into jjmontes/trac-to-redmine

Conflicts:
	main/core/ChangeLog
fix openchange dependencies
depend on samba instead of samba4
complete previous commit
Devel doc updated to avoid misunderstandings
Remove obsolete sope dependency
temporary removal of zoctools depend
temporary disable also ocsmanager depend
Merge pull request #941 from Zentyal/jjmontes/trac-to-redmine

jjmontes/trac-to-redmine
Merge branch 'master' into cperello/nginx-psgi

Conflicts:
	main/core/ChangeLog