Correcting show/hide functionality for node group templates

Fixing the behavior of the search box and how it works with
the show/hide all configs link.  Now, when the search box
is blanked out, we check the state of whether or not we
are showing all configs or just "important" ones and display
configs according to that.

Closes-Bug: #1212285

Change-Id: Id74cf3adfbc78a3f1983e32108c78eb03eef4bdf