Jean-Philippe Gaudreau authored Mar 23, 2016 and Robert Lyon committed May 12, 2016

We need to reset 'showsharedviews' and 'showsharedcollections' values
to 'By members of this group' for the default group home page because
they were wrongly modified.

behatnotneeded

Change-Id: I01b9eeb12af5db2c2a639bbaea24cd1f6b44b93e