[MDL-38602] META: Add behat tests for administration - Moodle Tracker

Meta issue to convert administration-related MDLQAs to behat feature files

blocks

MDL-38783 Mega-META: Convert MDLQAs to automated behat tests

1.	Automate MDLQA-1160 - A manager can configure a block to display throughout the site	Closed	David Monllaó
2.	Automate MDLQA-4600 - An admin can control which activities can be added to courses	Closed	David Monllaó
3.	Automate MDLQA-1178 - An administrator can filter user accounts by role, cohort and other variables	Closed	David Monllaó
4.	Automate MDLQA-1177 and MDLQA-1445 - An administrator can create a cohort and add users to it	Closed	David Monllaó
5.	Automate MDLQA-1175 - An administrator can upload users to the site	Closed	David Monllaó
6.	Automate MDLQA-1172 - Course short names may be displayed on the list of courses page	Closed	David Monllaó

META: Add behat tests for administration