Updated test coverage for attributes page

[downbythesieh]

No description provided.

[haxwell]

When I run this, the delete an attribute test does not pass. Check for existence of attribute page also fails, but you didn't change that one. Still, it's failing, and should be addressed.

[downbythesieh]

I just checked on my end. I had to run it a couple of times but it did work. I have cy.wait in many places. Maybe something was just running too fast or too slow?