Scala :
- populate value= in <input> HTML tag
- add .gitignore
Scala: JenaHelpers.storeURI() : fix confusion between doc. URI and graph
URI
- new ontology for Displaying and editing Triples, typically for a form; aligned with Fresnel : vocabulary/forms.owl.ttl

- JenaHelpers: pave the way for downloading used vocabularies by prefixes
- forms_play : call PopulateRDFCache.loadCommonVocabularies
- README.md updated
- doc/fr/formulaires.html updated