make adding_pages_collections a user, not admin behat test

[Rebecca Blundell]

This should be a user test, not admin as we want to check that a user can add pages and collections.

This is the primary test for adding a collection, so does it manually rather than in the background. (All other tests should do it in the background though!)

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/8474

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/8474
Committed: https://git.mahara.org/mahara/mahara/commit/429a43059ae17bdafb9eba818a57c54f658264cc
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 429a43059ae17bdafb9eba818a57c54f658264cc
Author: Niranjan Bandi <email address hidden>
Date: Fri Jan 26 14:18:53 2018 +1300

Bug 1715299-Changing the admin user to normal user

This should be a user test, not admin as we want to check that a user can add pages and collections.
Admin user is now changed to normal user

One of the failing tests was tinymce_mathslate_plugin.feature.
I was able to replicate this locally twice in 10 runs of the test.
Because of that I'm adding a 1 second wait to that test -rjb

Change-Id: Ie1fd1e08abda501669f7691a8efbf72d031e7fc7