Modify the root of the main OME CI server to use ci.openmicroscopy.org
Fix remaining links to hudson.openmicroscopy.org.uk
Update job name for 5.1.x series
Merge pull request #844 from sbesson/rebased/develop/new_ci_root

Modify the root of the main OME CI server to use ci.openmicroscopy.org (rebased onto develop)