fix(etag): Correct etag handling

Compute with the latest id of the ressource instead of the static id
fix(etag): Correct etags generation
feat(canonicalURL): Make canonical URL absolute
add revision on trash
feat(cache): Add support of header Cache-control : no-cache
feat(revision): Update revisions URL
Merge pull request #22 from cbonnissent/1.0-integration

Update etag, canonical URL generation, update revision