userportal, webadmin: minor look and feel tweaks

Noticed some minor look and feel bugs and fixed them
 * welcome page logo was missing
 * welcome page columns needed to shrink
 * welcome page header needed padding-bottom
 * fixed a splash.js error due to changed class names
 * made welcome page version text gray

Change-Id: If3b9ccc2754d5b871b5636fffc57228b5cb76a6b
Signed-off-by: Greg Sheremeta <gshereme@redhat.com>