Assign ember record identifiers ("id") based on UUID's

[hmaier-fws]

Modify how the internal metadata, contact and dictionary record identifiers ("id") are assigned.

Metadata, contact and dictionary records created by mdEditor have associated unique identifiers (UUID) assigned to each record at the time of creation ("metadataIdentifier", "contactID", "dictionaryID") - There are always associated with a record (mdEditor JSON and mdJSON.

A short (8 character) internal "mdEditor identifer" ("id") is also assigned to each record for use in managing the Ember datastore and is displayed in the browser as the record endpoint. Only included in the mdEditor JSON.

• Modify the record creation routine to use the first eight characters of the appropriate "metadataIdentifier", "contactID" or "dictionaryID as the internal ember identifier ("id").
• Apply the above when creating a new record from within the editor or when importing an existing record from a mdJSON file.

See: #480

[hmaier-fws]

Apparently the id's were once the full uuid. See: #272