Open Atrium (7.x-2.26) - en to cy translation catalogue (4 entries)

en: Save and continue
cy: Cadw a pharhau

en: @drupal installation complete
cy: Gosodiad @drupal wedi ei gwblhau

en: Congratulations, you installed @drupal!
cy: Llongyfarchiadau, rydych wedi gosod @drupal!

en: <a href="@url">Visit your new site</a>.
cy: <a href="@url">Ymwelwch a'ch safle newydd</a>.
