QA: Make close/open topics test pass again

This seems to be due to an issue with a hack for the collapsing tests.
This hack reopens the create topic form which switches the focus to
the new topic form. This seems unnecessary. Running against the collapsing
tests they still pass without this hack so I suspect this was working around
a bug that has since been fixed. If we discover some edge case, we can add this
hack back into the tests but it would be better to do it in the create new topic
step.

Change-Id: I508aeccbee7477412dab488d87ff5b768b5d9435
Merge "QA: Make close/open topics test pass again"