Disable search key press on 1-pane detail/editor activities

These activities don't have the search menu item, so the search key shouldn't
work.
(The behavior was weird anyway... e.g. it worked differently on
ContactDetailActivity and GroupDetailActivity...)

Bug 5032530

Change-Id: If3504cbd3e5cf027d43eec68d8f89e41bd7d324c
4 files changed