5.7.9 beta

[bourgeoa]

This PR seems rather big. I should have made smaller bits.

1. It is the result of discoveries made when trying to pass the conformance tests. These are passing entirely now.

The issues where raised in :

• https://github.com/solid-contrib/specification-tests/issues/112 acl-check for DELETE was wrong and needed access to resource ACL but also to parent resource ACL
• https://github.com/solid-contrib/specification-tests/issues/113 http to https : http not acccessible in the tested instance
• https://github.com/solid-contrib/specification-tests/issues/115 : precondition if-none-match=* should return 412 for PUT on existing resource
• https://github.com/solid-contrib/specification-tests/issues/116 NSS was mistakenly returning Content-Type: application/octet-stream; charset=utf-8 for HEAD on Container Erroneous contentType on container

Tests have been added

2. it includes also

   • APPEND for PUT on resource creation
   • control that same name do not occur on the creation of intermediate container

   and tests