UI changes to allow underscore in debug report name.

New message on the debug report creation screen now says that
underscore ('_') characters are allowed, as well as
hyphens ('-').

Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com>
Translation updates for underscore in debug report

Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com>