Fixes #5112: use good method to check technique metadata ...
Fixes #5114: Handle trailing slash in directory names when getting
techniques
Merge pull request #74 from VinceMacBuche/bug_5112/bug_method_ncf

Fixes #5112: use good method to check technique metadata ...
Merge pull request #75 from VinceMacBuche/bug_5114/ncf_path_technique_with_slash

Fixes #5114: Handle trailing slash in directory names when getting techniques
Fixes #5079: Add API to manage Techniques
Fixes #5083: ncf api auth, using Rudder api auth and cookie