webadmin: Always display edit icon in Setup Networks

The edit icon was hard to find due to it being only shown upon hover,
now it will be displayed all the time. Moreover, it will always be
displayed on the right edge of the panel to keep alignment uniform.

Change-Id: I7c4b23893239443644216d31c28df147bbda7ef0
Bug-Url: https://bugzilla.redhat.com/984737
Bug-Url: https://bugzilla.redhat.com/1100810
Signed-off-by: Lior Vernia <lvernia@redhat.com>