webadmin: tweak info icons in cluster popup

Tweak info icon location and spacing in cluster popup.

Change-Id: I61c4120ac6869b27d9faa2a3a0481d768911a5bb
Bug-Url: https://bugzilla.redhat.com/1123319
Bug-Url: https://bugzilla.redhat.com/1096845
Signed-off-by: Greg Sheremeta <gshereme@redhat.com>