Upgrade CKAN 1.5 instances

[dread]

CKAN 1.5 installations need to be upgrade to 1.5.1.

Working methodically through the CKANs on ​http://datacatalogs.org/group/ckan :

• berlin-open-data ​http://daten.berlin.de/ ???
• ckan-belgium ​http://be.ckan.net/ Migrated
• ckan-brazil ​http://br.ckan.net/ *1.5*
• ckan-italia ​http://it.ckan.net/ 1.3.3b
• ckan-lithuania ​http://lt.ckan.net/ Migrated
• ckan-poland ​http://pl.ckan.net/ Migrated
• ckan_ireland ​http://ie.ckan.net/ *1.5*
• cz-ckan-net ​http://cz.ckan.net/ *1.5*
• data-norge-no ​http://data.norge.no/ Not CKAN?
• data_gov_uk ​http://catalogue.data.gov.uk/ *1.5*
• datacatalogs-org ​http://datacatalogs.org/ *1.5*
• datadotgc-ca ​http://datadotgc.ca/ ​http://ca.ckan.net/ 1.4.2a
• datagm ​http://www.datagm.org.uk/
• datagov-ru ​http://datagov.ru/ ??
• datakilder-no ​http://no.ckan.net/ *1.5*
• datospublicos-org ​http://datospublicos.org/ 1.4.2
• gr-ckan-net ​http://gr.ckan.net/ Migrated
• hu-ckan-net ​http://hu.ckan.net/ Migrated
• iati-registry ​http://iatiregistry.org/ 1.5.1c
• katalog-offene-daten-oesterreich ​http://offener.datenkatalog.at/ 1.3.3b
• nosdonnees_fr ​http://www.nosdonnees.fr/ 1.3.1a
• offenedaten ​http://offenedaten.de/ *1.5*
• opengov-fi ​http://opengov.fi/ Not CKAN?
• opengov_es ​http://opengov.es/ 1.2
• publicdata-eu ​http://publicdata.eu/ 1.4.2a
• si-ckan-net ​http://si.ckan.net/ migrated
• the-data-hub ​http://thedatahub.org/ 1.5.1