this commit adds two new helper functions to use uuid information from the config.xml.

1) get a tagname by uuid, or __not_found__ if uuid is not in the config.xml
{{ helpers.getUUIDtag('a8da740a-046a-4994-8535-89f5fff47393') }}

2) returns an object by uuid, ready to use
{{ helpers.getUUID('a8da740a-046a-4994-8535-89f5fff47393').number }}