webadmin: Japanese - truncated text in login button

Storage Domain dialog - target list:
fix 'Login' button style.

Change-Id: I1a94eab7bfae4c852d0abe1fdbde1175a3509234
Bug-Url: https://bugzilla.redhat.com/927504
Signed-off-by: Daniel Erez <derez@redhat.com>