[52] Fix link jQuery bold bug

* Header and header links were
  toggling boldness on mouseover
  and mouseleave. The jQuery
  has been fixed so this no longer
  happens.
[52] Resize banner

* banner now slightly smaller,
  taking up less of the screen to
  prevent distracting the user.

* default font-families corrected
  for banner and body text.
Merge branch 'task-52-improve_header_style' into develop
Merge branch 'develop'