CKAN 1.3

http://ckan.org/milestone/ckan-v1.3

Highlights of changes: * Package edit form improved: * field instructions (#679) * name autofilled from title (#778) * Group-based access control - Authorization Groups (#647) * Metadata harvest job management (#739, #884, #771) * CSW harvesting now uses owslib (#885) * Package creation authorization is configurable (#648) * Read-only maintenance mode (#777) * Stats page (#832) and importer (#950) moved out into CKAN extensions

Minor: * site_title and site_description config variables (#974) * Package creation/edit timestamps (#806) * Caching configuration centralised (#828) * Command-line tools - sysadmin management (#782) * Group now versioned (#231)