CKAN 2.0.1

Bug fixes: * Use IDatasetForm schema for resource_update (#897) * Fixes for CKAN being run on a non-root URL (#948, #913) * Fix resource edit errors losing info (#580) * Fix Czech translation (#900) * Allow JSON filters for datastore_search on GET requests (#917) * Install vdm from the Python Package Index (#764) * Allow extra parameters on Solr queries (#739) * Create site user at startup if it does not exist (#952) * Fix modal popups positioning (#828) * Fix wrong redirect on dataset form on IE (#963)