Bug fixing: error when renaming variable in create_datasets and share…

…d datasets addition

Adding test for cluster-generated datasets

Bug fixing: api.ok failed for centroids and batch centroids

Docs update

Changing test to fit backend changes

Removing trace and checking for 0 denominator

Retrieving missing_tokens info from resource structures

Removing duplicated test step function

Increasing timeouts limits in tests to avoid faulse failures in asserts

Some typos and pep8 and pylint cleaning