i18n - add zh_CN language
refresh locales
fixes #863 - added ldap_filter to LDAP auth sources to filter lookups using RFC 2254 filters
fixes #2910 - renamed *.erb extensions to *.html.erb
Fixes #2540: bump fog version to 1.15.0
fixes #2933 - add missing fields to installation media API
fixes #2431 - handle fact uploads where host is missing $fqdn
fixes #2945 - extend AR to add getter/setters *_name(s) for has_many/belongs_to associations
fixes #2877: deletion of the organization or location in the context no longer breaks the session