Fix broken views using Transvision\Json class
Merge pull request #138 from flodolo/fix_json_references

Fix broken views using Transvision\Json class
Extract tag bindings starting with ## TAG: tag_name

* Global status: add a link in the header to translatestrings.
* Translate strings: display a tag near strings bound to tags.
* Error view: manage missing tags, extra tags, tags enabled with missing strings.
* lang_update, json, listsitesforlocale: ignore tag_bindings.
* add tests fot load ans startsWith