webadmin: overlapping event notification text

- Fixed issue where the height of a row was fixed and it
  would overflow onto the next line if the text was too
  long.

Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=987943
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=911071

Change-Id: Ib6ec7edbbf6d0cd391a2e8d5a28c0b1fa978b832
Signed-off-by: Alexander Wels <awels@redhat.com>