Clean up page preprocess+ page template and basic style.

before:
  <div class="someclass <?php print ns('grid-14', $var, 7); ?>">

  When nothing prints outputs a space:
  <div class="someclass ">

after:
  <div class="someclass<?php print ns(' grid-14', $var, 7); ?>">

  When nothing prints the space is gone:
  <div class="someclass">

Nothing changed with the ns function, this was always possible. The way it was called was changed.

more info… #388150: One HTML error from validation